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A circuit has a current of 2 amperes and a resistance of 4 ohms.The maximum power that can be delivered is


A) 16 watts.
B) 8 watts.
C) 2 watts.
D) 1/2 watt.

Correct Answer

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Electric potential is measured in


A) coulombs.
B) joules.
C) volts.
D) ohms.

Correct Answer

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An ampere is


A) coulomb/sec.
B) (coulomb) (sec) .
C) (volt) (ohm) .
D) ohm/volt.

Correct Answer

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Match the terms relating to electricity with the correct statement. -superconductor


A) electron
B) neutron
C) proton
D) binding energy
E) kinetic energy
F) atomic mass
G) atomic number
H) isotope

Correct Answer

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What is the total resistance of a circuit with two resistances of 3 and 5 ohms in series and two resistances of 4 ohms each in parallel?

Correct Answer

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All of the following choices are considered good metallic electrical conductors EXCEPT


A) gold.
B) silver.
C) carbon.
D) copper.

Correct Answer

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Electric insulators


A) convert electrical energy into heat.
B) consist of materials like silicon.
C) inhibit movement of electrical charge.
D) permit movement of electrical charge.

Correct Answer

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The resistance in a wire decreases as its


A) diameter increases.
B) diameter decreases.
C) temperature increases.
D) surface area decreases.

Correct Answer

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If a circuit has potential difference of 80 kV and a current of 400 mA, what is the resistance?

Correct Answer

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2.0 *105 oh...

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