Electricity and Magnetism MCQ question and answer with solution

1

The amount of electrical energy consumed. When using 1 kW of power for 1 hour in a circuit. Show it in joules.

A) 4.6 × 10⁶ joule B) 3.6 × 10⁶ joule C) 6.3 × 10⁵ joule D) 6.3 × 10⁶ joule

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Answer & Solution

Answer: Option B

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2

The induced current is highest when the direction of motion of the coil is . . . . . . . . relative to the magnetic field ?

A) 180° B) 45° C) 90° D) 0°

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Answer & Solution

Answer: Option C

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3

In the circuit given below, what is the current flowing in 6Ω resistances?
Electricity and Magnetism mcq question image

A) 0.22 B) 0.55 A C) 2.22 A D) 2.775 A

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Answer & Solution

Answer: Option B

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4

Which of the following components store energy in the form of electrical charges?

A) Capacitors B) Transformers C) Resistors D) Inductors

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Answer & Solution

Answer: Option A

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5

Where are electrical switches are connected?

A) Live wire B) Ground wire C) Neutral wire D) All of these

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Answer & Solution

Answer: Option A

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6

The fuse in our domestic electric circuit melts, when there is a high rise in

A) inductance B) current C) resistance D) capacitance

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Answer & Solution

Answer: Option B

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7

If an iron on which 1,000 W is inscribed it run for 3 hours daily, then the total energy consumed by it in 30 days will be in kWh-

A) 9000 B) 900 C) 90000 D) 90

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Answer & Solution

Answer: Option D

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8

What is the statement of Coulomb's law?

A) The magnitude of the force of attraction (or repulsion) between two point charges is inversely proportional to the product of the magnitude of the two charges as well as the square of the distance between them B) The magnitude of the force of attraction (or repulsion) between two point charges is inversely proportional to the product of the two charges and is inversely proportional to the square of the distance between them C) The magnitude of the force of attraction (or repulsion) between two point charges is directly proportional to the product of the magnitude of two charges and inversely proportional to the square of the distance between them D) The magnitude of the force of attraction (or repulsion) between two point charges is directly proportional to the amount of the two charges, as well as the square of the distance between them

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Answer & Solution

Answer: Option C

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9

Three resistors 5 Ω, 6 Ω, 4 Ω are connected in series. The total resistance will be . . . . . . . .

A) 10 Ω B) 15 Ω C) 10 Ω-m D) 15 Ω-m

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Answer & Solution

Answer: Option B

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10

At which place earth's magnetic field becomes horizontal?

A) Magnetic meridian B) Magnetic equator C) Geographical pole D) Tropic of cancer

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Answer & Solution

Answer: Option B

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