Voltage and current electrical interview question

16.

Which voltage source converts chemical energy to electrical energy?
A.     Electrical generator
B.     Battery
C.     Solar cell
D.     Electronic power supply
Answer & Explanation

Answer: Option B

Explanation:

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17.

An example of potential energy is:
A.     tea-kettle steam
B.     a moving vehicle
C.     the sun
D.     a battery
Answer & Explanation

Answer: Option D

Explanation:

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18.

If 40 C of charge flow past a point in 20 s, what is the current?
A.     2 A    B.     0.5 A
C.     20 A    D.     40 A
Answer & Explanation

Answer: Option A

Explanation:

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19.

Batteries differ from fuel cells in that
A.     a battery is a closed system
B.     a battery uses hydrogen and oxygen to create electricity
C.     a battery uses a polymer electrolyte membrane
D.     none of the above
Answer & Explanation

Answer: Option A

Explanation:

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20.

The removal of a non-neutral subatomic particle converts the atom into a:
A.     charged ion
B.     nucleus
C.     heavier element
D.     compound
Answer & Explanation

Answer: Option A

Explanation:

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