Aluminum has a resistivity of 2.65 $\times$ 108 $\Omega$ m.What is the resistance of 15 m of aluminum wire of cross-sectional area 1.0 mm2?

A) 1.6 $\Omega$ B) 0.40 $\Omega$ C) 0.13 $\Omega$ D) 1.3 $\times$ 102 $\Omega$ E) 56 $\Omega$ A) 1.6 $\Omega$ B) 0.40 $\Omega$ C) 0.13 $\Omega$ D) 1.3 $\times$ 102 $\Omega$ E) 56 $\Omega$ B

Exam 18: Electric Current and Circuits

Three resistors, R₁ = 4.0 $\Omega$ , R₂ = 3.0 $\Omega$ , and R₃ = 2.0 $\Omega$ , are connected in series to a 9.0 V battery.What is the total power dissipated by the circuit?

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Question 1

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A bird can safely land on a bare high voltage power line because

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Question 2

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Aluminum has a resistivity of 2.65 $\times$ 10⁸ $\Omega$ m.What is the resistance of 15 m of aluminum wire of cross-sectional area 1.0 mm²?

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(Multiple Choice)

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Question 3

Correct Answer:

Verified

A series circuit consists of a 1.02 V source of emf, a 2.00 mF capacitor, a 1000 $\Omega$ resistor, and a switch.When the switch is closed, how long does it take for the current to reach one-half its maximum value?

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Question 4

An ampere, A ,is equivalent to a

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Question 5

The resistance of a wire increases 3.9% when the temperature of the wire is raised 100 $^{\circ}$ C.What is the temperature coefficient of resistivity of the wire material?

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Question 6

Three resistors, R₁ = 9.00 $\Omega$ , R₂ = 3.00 $\Omega$ , and R₃ = 1.00 $\Omega$ , are connected in parallel to a 9.00 V battery.What is the total power dissipated in the circuit?

(Multiple Choice)

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Question 7

A carbon resistor is made of a cylinder of carbon,of length 1.5 cm.If the resistivity of carbon is 3.5 $\times$ 10^-5 $\Omega$ m and when placed in a circuit a potential difference of 0.15 V exists when 12 A flows across the resistor,what is the radius of the cylinder?

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Question 8

What is the resistance of the combination of resistors?

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Question 9

A variable resistor is connected to a constant voltage source.When the resistance is increased from 5.5 $\Omega$ to 9.3 $\Omega$ ,what happens to the power dissipated?

(Multiple Choice)

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Question 10

Capacitors of values 6.0 mF and 9.0 mF are connected in series to a 30.0 V power supply.What is the resulting potential difference across the 6.0 mF capacitor?

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Question 11

Capacitors of values 6.0 mF and 9.0 mF are connected in series.What is the capacitance of the combination?

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Question 12

Two carbon cylinders have radii r and 2r and they both have length L.What is the resistance of the first if the resistance of the second is 12 $\Omega$ ?

(Multiple Choice)

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Question 13

An ohm is equivalent to a(n)

(Multiple Choice)

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Question 14

Two carbon cylinders have radii 2r and r and the first has length 2L,while the second has length L.What is the resistance of the first if the resistance of the second is 12 $\Omega$ ?

(Multiple Choice)

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Question 15

A carbon resistor is made of a cylinder of carbon,of diameter 7.4 mm.If the resistivity of carbon is 3.5 $\times$ 10^-5 $\Omega$ m and when placed in a circuit a potential difference of 0.15 V exists when 12 A flows across the resistor,what is the length of the cylinder?

(Multiple Choice)

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Question 16

A wire of radius 0.15 mm is made of an unknown metal and carries a current of 8.4 mA.The drift velocity for electrons in the wire is measured to be 36 $\times$ 10^-6 m/s.What is the carrier density of the metal from which the wire is made?

(Multiple Choice)

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Question 17

By how much does the current fall after the switch is closed in a series RC circuit when three time constants have elapsed?

(Multiple Choice)

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Question 18

The arrangement is composed of four 6.0 mF capacitors.What is the capacitance of the combination?

(Multiple Choice)

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Question 19

Four 12 $\Omega$ resistors are connected together.

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Question 20

Showing 1 - 20 of 70

Exam 18: Electric Current and Circuits

Three resistors, R1 = 4.0 Ω\OmegaΩ , R2 = 3.0 Ω\OmegaΩ , and R3 = 2.0 Ω\OmegaΩ , are connected in series to a 9.0 V battery.What is the total power dissipated by the circuit?

A bird can safely land on a bare high voltage power line because

Aluminum has a resistivity of 2.65 ×\times× 108 Ω\OmegaΩ m.What is the resistance of 15 m of aluminum wire of cross-sectional area 1.0 mm2?

A series circuit consists of a 1.02 V source of emf, a 2.00 mF capacitor, a 1000 Ω\OmegaΩ resistor, and a switch.When the switch is closed, how long does it take for the current to reach one-half its maximum value?

An ampere, A ,is equivalent to a

The resistance of a wire increases 3.9% when the temperature of the wire is raised 100 ∘^{\circ}∘ C.What is the temperature coefficient of resistivity of the wire material?

Three resistors, R1 = 9.00 Ω\OmegaΩ , R2 = 3.00 Ω\OmegaΩ , and R3 = 1.00 Ω\OmegaΩ , are connected in parallel to a 9.00 V battery.What is the total power dissipated in the circuit?

A carbon resistor is made of a cylinder of carbon,of length 1.5 cm.If the resistivity of carbon is 3.5 ×\times× 10-5 Ω\OmegaΩ m and when placed in a circuit a potential difference of 0.15 V exists when 12 A flows across the resistor,what is the radius of the cylinder?

What is the resistance of the combination of resistors?

A variable resistor is connected to a constant voltage source.When the resistance is increased from 5.5 Ω\OmegaΩ to 9.3 Ω\OmegaΩ ,what happens to the power dissipated?

Capacitors of values 6.0 mF and 9.0 mF are connected in series to a 30.0 V power supply.What is the resulting potential difference across the 6.0 mF capacitor?

Capacitors of values 6.0 mF and 9.0 mF are connected in series.What is the capacitance of the combination?

Two carbon cylinders have radii r and 2r and they both have length L.What is the resistance of the first if the resistance of the second is 12 Ω\OmegaΩ ?

An ohm is equivalent to a(n)

Two carbon cylinders have radii 2r and r and the first has length 2L,while the second has length L.What is the resistance of the first if the resistance of the second is 12 Ω\OmegaΩ ?

A carbon resistor is made of a cylinder of carbon,of diameter 7.4 mm.If the resistivity of carbon is 3.5 ×\times× 10-5 Ω\OmegaΩ m and when placed in a circuit a potential difference of 0.15 V exists when 12 A flows across the resistor,what is the length of the cylinder?

A wire of radius 0.15 mm is made of an unknown metal and carries a current of 8.4 mA.The drift velocity for electrons in the wire is measured to be 36 ×\times× 10-6 m/s.What is the carrier density of the metal from which the wire is made?

By how much does the current fall after the switch is closed in a series RC circuit when three time constants have elapsed?

The arrangement is composed of four 6.0 mF capacitors.What is the capacitance of the combination?

Four 12 Ω\OmegaΩ resistors are connected together.

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Three resistors, R₁ = 4.0 $\Omega$ , R₂ = 3.0 $\Omega$ , and R₃ = 2.0 $\Omega$ , are connected in series to a 9.0 V battery.What is the total power dissipated by the circuit?

Aluminum has a resistivity of 2.65 $\times$ 10⁸ $\Omega$ m.What is the resistance of 15 m of aluminum wire of cross-sectional area 1.0 mm²?

A series circuit consists of a 1.02 V source of emf, a 2.00 mF capacitor, a 1000 $\Omega$ resistor, and a switch.When the switch is closed, how long does it take for the current to reach one-half its maximum value?

The resistance of a wire increases 3.9% when the temperature of the wire is raised 100 $^{\circ}$ C.What is the temperature coefficient of resistivity of the wire material?

Three resistors, R₁ = 9.00 $\Omega$ , R₂ = 3.00 $\Omega$ , and R₃ = 1.00 $\Omega$ , are connected in parallel to a 9.00 V battery.What is the total power dissipated in the circuit?

A carbon resistor is made of a cylinder of carbon,of length 1.5 cm.If the resistivity of carbon is 3.5 $\times$ 10^-5 $\Omega$ m and when placed in a circuit a potential difference of 0.15 V exists when 12 A flows across the resistor,what is the radius of the cylinder?

A variable resistor is connected to a constant voltage source.When the resistance is increased from 5.5 $\Omega$ to 9.3 $\Omega$ ,what happens to the power dissipated?

Two carbon cylinders have radii r and 2r and they both have length L.What is the resistance of the first if the resistance of the second is 12 $\Omega$ ?

Two carbon cylinders have radii 2r and r and the first has length 2L,while the second has length L.What is the resistance of the first if the resistance of the second is 12 $\Omega$ ?

A carbon resistor is made of a cylinder of carbon,of diameter 7.4 mm.If the resistivity of carbon is 3.5 $\times$ 10^-5 $\Omega$ m and when placed in a circuit a potential difference of 0.15 V exists when 12 A flows across the resistor,what is the length of the cylinder?

A wire of radius 0.15 mm is made of an unknown metal and carries a current of 8.4 mA.The drift velocity for electrons in the wire is measured to be 36 $\times$ 10^-6 m/s.What is the carrier density of the metal from which the wire is made?

Four 12 $\Omega$ resistors are connected together.