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Physics equations/20- Electric Current, Resistance, and Ohm's Law/Q:PowerDriftVelocity/testbank

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a20ElectricCurrentResistivityOhm_PowerDriftVel_v1 edit

A 4 volt battery moves 27 Coulombs of charge in 2.6 hours. What is the power?

a) 7.86 x 10-3 W
b) 9.52 x 10-3 W
c) 1.15 x 10-2 W
d) 1.4 x 10-2 W
e) 1.69 x 10-2 W

copies
===2===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_1-->A 5.3 volt battery moves 11 Coulombs of charge in 2.1 hours.  What is the power?}
+a) 7.71 x 10<sup>-3</sup> W
-b) 9.34 x 10<sup>-3</sup> W
-c) 1.13 x 10<sup>-2</sup> W
-d) 1.37 x 10<sup>-2</sup> W
-e) 1.66 x 10<sup>-2</sup> W
===3===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_1-->A 1.4 volt battery moves 87 Coulombs of charge in 2 hours.  What is the power?}
-a) 7.85 x 10<sup>-3</sup> W
-b) 9.51 x 10<sup>-3</sup> W
-c) 1.15 x 10<sup>-2</sup> W
-d) 1.4 x 10<sup>-2</sup> W
+e) 1.69 x 10<sup>-2</sup> W
===4===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_1-->A 5.8 volt battery moves 95 Coulombs of charge in 0.3 hours.  What is the power?}
-a) 4.21 x 10<sup>-1</sup> W
+b) 5.1 x 10<sup>-1</sup> W
-c) 6.18 x 10<sup>-1</sup> W
-d) 7.49 x 10<sup>-1</sup> W
-e) 9.07 x 10<sup>-1</sup> W
===5===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_1-->A 4.7 volt battery moves 50 Coulombs of charge in 1.3 hours.  What is the power?}
-a) 4.14 x 10<sup>-2</sup> W
+b) 5.02 x 10<sup>-2</sup> W
-c) 6.08 x 10<sup>-2</sup> W
-d) 7.37 x 10<sup>-2</sup> W
-e) 8.93 x 10<sup>-2</sup> W
===6===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_1-->A 3.9 volt battery moves 90 Coulombs of charge in 2.2 hours.  What is the power?}
+a) 4.43 x 10<sup>-2</sup> W
-b) 5.37 x 10<sup>-2</sup> W
-c) 6.51 x 10<sup>-2</sup> W
-d) 7.88 x 10<sup>-2</sup> W
-e) 9.55 x 10<sup>-2</sup> W
===7===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_1-->A 5.1 volt battery moves 43 Coulombs of charge in 1.5 hours.  What is the power?}
+a) 4.06 x 10<sup>-2</sup> W
-b) 4.92 x 10<sup>-2</sup> W
-c) 5.96 x 10<sup>-2</sup> W
-d) 7.22 x 10<sup>-2</sup> W
-e) 8.75 x 10<sup>-2</sup> W
===8===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_1-->A 4 volt battery moves 19 Coulombs of charge in 1.3 hours.  What is the power?}
+a) 1.62 x 10<sup>-2</sup> W
-b) 1.97 x 10<sup>-2</sup> W
-c) 2.38 x 10<sup>-2</sup> W
-d) 2.89 x 10<sup>-2</sup> W
-e) 3.5 x 10<sup>-2</sup> W
===9===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_1-->A 3.1 volt battery moves 52 Coulombs of charge in 1.7 hours.  What is the power?}
-a) 1.79 x 10<sup>-2</sup> W
-b) 2.17 x 10<sup>-2</sup> W
+c) 2.63 x 10<sup>-2</sup> W
-d) 3.19 x 10<sup>-2</sup> W
-e) 3.87 x 10<sup>-2</sup> W
===10===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_1-->A 3.1 volt battery moves 40 Coulombs of charge in 0.9 hours.  What is the power?}
-a) 2.61 x 10<sup>-2</sup> W
-b) 3.16 x 10<sup>-2</sup> W
+c) 3.83 x 10<sup>-2</sup> W
-d) 4.64 x 10<sup>-2</sup> W
-e) 5.62 x 10<sup>-2</sup> W

a20ElectricCurrentResistivityOhm_PowerDriftVel_v1 edit

The diameter of a copper wire is 5.5 mm, and it carries a current of 76 amps. What is the drift velocity if copper has a density of 8.8E3 kg/m3 and an atomic mass of 63.54 g/mol? (1 mol = 6.02E23 atoms, and copper has one free electron per atom.)

a) 1.35 x 10-4m/s
b) 1.63 x 10-4m/s
c) 1.98 x 10-4m/s
d) 2.39 x 10-4m/s
e) 2.9 x 10-4m/s

copies
===2===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_2-->The diameter of a copper wire is 1.7 mm, and it carries a current of 92 amps.  What is the drift velocity if copper has a density of 8.8E3 kg/m<sup>3</sup> and an atomic mass of 63.54 g/mol? (1 mol = 6.02E23 atoms, and copper has one free electron per atom.)}
-a) 2.07 x 10<sup>-3</sup>m/s
-b) 2.5 x 10<sup>-3</sup>m/s
+c) 3.03 x 10<sup>-3</sup>m/s
-d) 3.67 x 10<sup>-3</sup>m/s
-e) 4.45 x 10<sup>-3</sup>m/s
===3===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_2-->The diameter of a copper wire is 8.7 mm, and it carries a current of 22 amps.  What is the drift velocity if copper has a density of 8.8E3 kg/m<sup>3</sup> and an atomic mass of 63.54 g/mol? (1 mol = 6.02E23 atoms, and copper has one free electron per atom.)}
+a) 2.77 x 10<sup>-5</sup>m/s
-b) 3.36 x 10<sup>-5</sup>m/s
-c) 4.06 x 10<sup>-5</sup>m/s
-d) 4.92 x 10<sup>-5</sup>m/s
-e) 5.97 x 10<sup>-5</sup>m/s
===4===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_2-->The diameter of a copper wire is 3.6 mm, and it carries a current of 52 amps.  What is the drift velocity if copper has a density of 8.8E3 kg/m<sup>3</sup> and an atomic mass of 63.54 g/mol? (1 mol = 6.02E23 atoms, and copper has one free electron per atom.)}
+a) 3.82 x 10<sup>-4</sup>m/s
-b) 4.63 x 10<sup>-4</sup>m/s
-c) 5.61 x 10<sup>-4</sup>m/s
-d) 6.8 x 10<sup>-4</sup>m/s
-e) 8.24 x 10<sup>-4</sup>m/s
===5===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_2-->The diameter of a copper wire is 9.9 mm, and it carries a current of 41 amps.  What is the drift velocity if copper has a density of 8.8E3 kg/m<sup>3</sup> and an atomic mass of 63.54 g/mol? (1 mol = 6.02E23 atoms, and copper has one free electron per atom.)}
-a) 2.24 x 10<sup>-5</sup>m/s
-b) 2.72 x 10<sup>-5</sup>m/s
-c) 3.29 x 10<sup>-5</sup>m/s
+d) 3.99 x 10<sup>-5</sup>m/s
-e) 4.83 x 10<sup>-5</sup>m/s
===6===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_2-->The diameter of a copper wire is 9.2 mm, and it carries a current of 64 amps.  What is the drift velocity if copper has a density of 8.8E3 kg/m<sup>3</sup> and an atomic mass of 63.54 g/mol? (1 mol = 6.02E23 atoms, and copper has one free electron per atom.)}
-a) 4.91 x 10<sup>-5</sup>m/s
-b) 5.95 x 10<sup>-5</sup>m/s
+c) 7.2 x 10<sup>-5</sup>m/s
-d) 8.73 x 10<sup>-5</sup>m/s
-e) 1.06 x 10<sup>-4</sup>m/s
===7===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_2-->The diameter of a copper wire is 3.8 mm, and it carries a current of 88 amps.  What is the drift velocity if copper has a density of 8.8E3 kg/m<sup>3</sup> and an atomic mass of 63.54 g/mol? (1 mol = 6.02E23 atoms, and copper has one free electron per atom.)}
-a) 2.7 x 10<sup>-4</sup>m/s
-b) 3.27 x 10<sup>-4</sup>m/s
-c) 3.96 x 10<sup>-4</sup>m/s
-d) 4.79 x 10<sup>-4</sup>m/s
+e) 5.81 x 10<sup>-4</sup>m/s
===8===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_2-->The diameter of a copper wire is 1.9 mm, and it carries a current of 33 amps.  What is the drift velocity if copper has a density of 8.8E3 kg/m<sup>3</sup> and an atomic mass of 63.54 g/mol? (1 mol = 6.02E23 atoms, and copper has one free electron per atom.)}
-a) 5.93 x 10<sup>-4</sup>m/s
-b) 7.19 x 10<sup>-4</sup>m/s
+c) 8.71 x 10<sup>-4</sup>m/s
-d) 1.06 x 10<sup>-3</sup>m/s
-e) 1.28 x 10<sup>-3</sup>m/s
===9===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_2-->The diameter of a copper wire is 7.4 mm, and it carries a current of 38 amps.  What is the drift velocity if copper has a density of 8.8E3 kg/m<sup>3</sup> and an atomic mass of 63.54 g/mol? (1 mol = 6.02E23 atoms, and copper has one free electron per atom.)}
-a) 3.07 x 10<sup>-5</sup>m/s
-b) 3.72 x 10<sup>-5</sup>m/s
-c) 4.5 x 10<sup>-5</sup>m/s
-d) 5.46 x 10<sup>-5</sup>m/s
+e) 6.61 x 10<sup>-5</sup>m/s
===10===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_2-->The diameter of a copper wire is 8.3 mm, and it carries a current of 87 amps.  What is the drift velocity if copper has a density of 8.8E3 kg/m<sup>3</sup> and an atomic mass of 63.54 g/mol? (1 mol = 6.02E23 atoms, and copper has one free electron per atom.)}
-a) 6.77 x 10<sup>-5</sup>m/s
-b) 8.2 x 10<sup>-5</sup>m/s
-c) 9.93 x 10<sup>-5</sup>m/s
+d) 1.2 x 10<sup>-4</sup>m/s
-e) 1.46 x 10<sup>-4</sup>m/s

a20ElectricCurrentResistivityOhm_PowerDriftVel_v1 edit

A 168 Watt DC motor draws 0.3 amps of current. What is effective resistance?

a) 1.87 x 103 Ω
b) 2.26 x 103 Ω
c) 2.74 x 103 Ω
d) 3.32 x 103 Ω
e) 4.02 x 103 Ω

copies
===2===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_3-->A 164 Watt DC motor draws 0.25 amps of current.  What is effective resistance?}
-a) 1.22 x 10<sup>3</sup> Ω
-b) 1.48 x 10<sup>3</sup> Ω
-c) 1.79 x 10<sup>3</sup> Ω
-d) 2.17 x 10<sup>3</sup> Ω
+e) 2.62 x 10<sup>3</sup> Ω
===3===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_3-->A 162 Watt DC motor draws 0.41 amps of current.  What is effective resistance?}
-a) 5.42 x 10<sup>2</sup> Ω
-b) 6.57 x 10<sup>2</sup> Ω
-c) 7.95 x 10<sup>2</sup> Ω
+d) 9.64 x 10<sup>2</sup> Ω
-e) 1.17 x 10<sup>3</sup> Ω
===4===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_3-->A 195 Watt DC motor draws 0.49 amps of current.  What is effective resistance?}
+a) 8.12 x 10<sup>2</sup> Ω
-b) 9.84 x 10<sup>2</sup> Ω
-c) 1.19 x 10<sup>3</sup> Ω
-d) 1.44 x 10<sup>3</sup> Ω
-e) 1.75 x 10<sup>3</sup> Ω
===5===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_3-->A 130 Watt DC motor draws 0.3 amps of current.  What is effective resistance?}
-a) 8.12 x 10<sup>2</sup> Ω
-b) 9.84 x 10<sup>2</sup> Ω
-c) 1.19 x 10<sup>3</sup> Ω
+d) 1.44 x 10<sup>3</sup> Ω
-e) 1.75 x 10<sup>3</sup> Ω
===6===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_3-->A 104 Watt DC motor draws 0.13 amps of current.  What is effective resistance?}
-a) 3.46 x 10<sup>3</sup> Ω
-b) 4.19 x 10<sup>3</sup> Ω
-c) 5.08 x 10<sup>3</sup> Ω
+d) 6.15 x 10<sup>3</sup> Ω
-e) 7.46 x 10<sup>3</sup> Ω
===7===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_3-->A 196 Watt DC motor draws 0.35 amps of current.  What is effective resistance?}
+a) 1.6 x 10<sup>3</sup> Ω
-b) 1.94 x 10<sup>3</sup> Ω
-c) 2.35 x 10<sup>3</sup> Ω
-d) 2.85 x 10<sup>3</sup> Ω
-e) 3.45 x 10<sup>3</sup> Ω
===8===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_3-->A 171 Watt DC motor draws 0.47 amps of current.  What is effective resistance?}
+a) 7.74 x 10<sup>2</sup> Ω
-b) 9.38 x 10<sup>2</sup> Ω
-c) 1.14 x 10<sup>3</sup> Ω
-d) 1.38 x 10<sup>3</sup> Ω
-e) 1.67 x 10<sup>3</sup> Ω
===9===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_3-->A 129 Watt DC motor draws 0.22 amps of current.  What is effective resistance?}
-a) 2.2 x 10<sup>3</sup> Ω
+b) 2.67 x 10<sup>3</sup> Ω
-c) 3.23 x 10<sup>3</sup> Ω
-d) 3.91 x 10<sup>3</sup> Ω
-e) 4.74 x 10<sup>3</sup> Ω
===10===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_3-->A 146 Watt DC motor draws 0.23 amps of current.  What is effective resistance?}
-a) 2.28 x 10<sup>3</sup> Ω
+b) 2.76 x 10<sup>3</sup> Ω
-c) 3.34 x 10<sup>3</sup> Ω
-d) 4.05 x 10<sup>3</sup> Ω
-e) 4.91 x 10<sup>3</sup> Ω

a20ElectricCurrentResistivityOhm_PowerDriftVel_v1 edit

A power supply delivers 113 watts of power to a 104 ohm resistor. What was the applied voltage?

a) 5.03 x 101 volts
b) 6.1 x 101 volts
c) 7.39 x 101 volts
d) 8.95 x 101 volts
e) 1.08 x 102 volts

copies
===2===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_4-->A power supply delivers  149 watts of power to a 153 ohm resistor.  What was the applied voltage?}
-a) 8.49 x 10<sup>1</sup> volts
-b) 1.03 x 10<sup>2</sup> volts
-c) 1.25 x 10<sup>2</sup> volts
+d) 1.51 x 10<sup>2</sup> volts
-e) 1.83 x 10<sup>2</sup> volts
===3===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_4-->A power supply delivers  101 watts of power to a 219 ohm resistor.  What was the applied voltage?}
+a) 1.49 x 10<sup>2</sup> volts
-b) 1.8 x 10<sup>2</sup> volts
-c) 2.18 x 10<sup>2</sup> volts
-d) 2.64 x 10<sup>2</sup> volts
-e) 3.2 x 10<sup>2</sup> volts
===4===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_4-->A power supply delivers  145 watts of power to a 132 ohm resistor.  What was the applied voltage?}
-a) 6.42 x 10<sup>1</sup> volts
-b) 7.78 x 10<sup>1</sup> volts
-c) 9.43 x 10<sup>1</sup> volts
-d) 1.14 x 10<sup>2</sup> volts
+e) 1.38 x 10<sup>2</sup> volts
===5===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_4-->A power supply delivers  145 watts of power to a 244 ohm resistor.  What was the applied voltage?}
+a) 1.88 x 10<sup>2</sup> volts
-b) 2.28 x 10<sup>2</sup> volts
-c) 2.76 x 10<sup>2</sup> volts
-d) 3.34 x 10<sup>2</sup> volts
-e) 4.05 x 10<sup>2</sup> volts
===6===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_4-->A power supply delivers  138 watts of power to a 206 ohm resistor.  What was the applied voltage?}
-a) 1.39 x 10<sup>2</sup> volts
+b) 1.69 x 10<sup>2</sup> volts
-c) 2.04 x 10<sup>2</sup> volts
-d) 2.47 x 10<sup>2</sup> volts
-e) 3 x 10<sup>2</sup> volts
===7===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_4-->A power supply delivers  187 watts of power to a 287 ohm resistor.  What was the applied voltage?}
+a) 2.32 x 10<sup>2</sup> volts
-b) 2.81 x 10<sup>2</sup> volts
-c) 3.4 x 10<sup>2</sup> volts
-d) 4.12 x 10<sup>2</sup> volts
-e) 4.99 x 10<sup>2</sup> volts
===8===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_4-->A power supply delivers  169 watts of power to a 219 ohm resistor.  What was the applied voltage?}
-a) 8.93 x 10<sup>1</sup> volts
-b) 1.08 x 10<sup>2</sup> volts
-c) 1.31 x 10<sup>2</sup> volts
-d) 1.59 x 10<sup>2</sup> volts
+e) 1.92 x 10<sup>2</sup> volts
===9===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_4-->A power supply delivers  110 watts of power to a 299 ohm resistor.  What was the applied voltage?}
-a) 8.42 x 10<sup>1</sup> volts
-b) 1.02 x 10<sup>2</sup> volts
-c) 1.24 x 10<sup>2</sup> volts
-d) 1.5 x 10<sup>2</sup> volts
+e) 1.81 x 10<sup>2</sup> volts
===10===
{<!--a20ElectricCurrentResistivityOhm_PowerDriftVel_4-->A power supply delivers  114 watts of power to a 294 ohm resistor.  What was the applied voltage?}
-a) 1.25 x 10<sup>2</sup> volts
-b) 1.51 x 10<sup>2</sup> volts
+c) 1.83 x 10<sup>2</sup> volts
-d) 2.22 x 10<sup>2</sup> volts
-e) 2.69 x 10<sup>2</sup> volts
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