Electronics - Resistance and Power

Exercise :: Resistance and Power - General Questions

11. 

What current is flowing in the circuit?

mcq2_1002_1.jpg

A. 288 kA
B. 2 kA
C. 50 mA
D. 500 mu.gifA

Answer: Option D

Explanation:

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12. 

The six basic forms of energy are:

A. light, sun, magnetic, chemical, electrical, and mechanical
B. electrical, mechanical, light, heat, magnetic, and chemical
C. electrical, mechanical, sun, heat, chemical, and light
D. potential, sun, light, chemical, electrical, and mechanical

Answer: Option B

Explanation:

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13. 

How much energy is stored if 6.24 x 1018 electrons are stored in 4 volts?

A. 4 joules
B. 1.56 x 1018 electrons
C. 1.56 coulombs
D. 2.496 x 1019 electrons

Answer: Option A

Explanation:

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14. 

With Ohm's law:

A. current is inversely proportional to resistance
B. resistance is directly proportional to voltage
C. voltage is indirectly proportional to power
D. current is directly proportional to resistance

Answer: Option A

Explanation:

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15. 

Power is defined as:

A. the rate at which energy is used
B. watts
C. energy
D. the rate at which energy is generated

Answer: Option A

Explanation:

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