Electricity and Magnetism MCQ question and answer with solution

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Each section contains 100 MCQs on Electricity and Magnetism .

18 volts = . . . . . . . . × 3 ohms

A) 6 amperes B) 6 watts C) 6 milli amperes D) 6 joules

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Of the two bulbs in a house, one glows brighter than the other. In this context which of the following statements is correct?

A) The brightness does not depend on the resistance B) Both the bulbs have same the resistance C) The bright bulb has larger resistance D) The dim bulb has larger resistance

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

After using for some time, big transformers get heated up. This is due to the fact that
1. current produces heat in the transformers.
2. hysteresis loss occurs in the transformers.
3. liquid used for cooling gets heated.
Select the correct answer:

A) Only 1 B) 2 and 3 C) 1 and 2 D) 1, 2 and 3

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The potential difference between the terminals of an electric heater is 60V when it draw of current of 4A from the source. What current will the heater draw if the potential difference is increased to 127.5 V?

A) 24 A B) 10 A C) 8.5 A D) 12 A

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In electrical motor

A) heat is converted into electrical energy B) electrical energy is converted into heat C) electrical energy is converted into mechanical energy D) mechanical energy is converted into electrical energy

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which of the following devices is not based on the heating effect of electric current?

A) Electric bulb (with filament) B) Electric heater C) Microwave D) Electric iron

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Superconductors are those elements

A) whose conductivity is intermediate between metals and insulators B) whose resistance falls almost to zero at very low temperatures C) which tum into insulators at very low temperatures D) which conduct electricity only at super-high temperatures

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Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Those wires which transmit electricity in houses having a coating of . . . . . . . .

A) polyvinyl chloride B) polythene C) polyethyl fluoride D) polyesterin chloride

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

A closed and continuous path of electric current circuit is called?

A) path B) electric circuit C) mesh D) loop

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which gas is filled in normal tubelights?

A) Sodium vapour with argon B) Sodium vapour with neon C) Mercury vapour with argon D) Mercury vapour with neon

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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Electricity and Magnetism MCQ question and answer with solution | Physics Gk MCQs