Physics GK · all questions

Electricity and Magnetism
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Q481

What is the net force experienced by a bar magnet placed in a uniform magnetic field?

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Q482

Three resistors with magnitudes 2, 4 and 8Ω are connected in parallel, then equivalent resistance of the system would be

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Q483

Electric current in a metal wire is due to the flow of

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Q484

What is the relation between electric current and potential difference across the conductor?

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Q485

The metal used to make lightning conductor is

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Q486

Who among the following introduced the concept of electric field for the first time?

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Q487

The two resistance of 10Ω and 20Ω in series combination are connected with 6V batteries. The electric current in the circuit will be-

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Q488

Which one of the following physical quantities does not affect the resistance of a cylindrical resistor?

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Q489

The basic difference between an AC generator and a DC generator is that

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Q490

Which of the following devices detects the current in the circuit?

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Q491

The current of 0.9A is drawn by a filament of an electric bulb for two minutes. The charge flowing through the circuit is?

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Q492

Which of the following options is correct with respect to metal conductors?

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Q493

An electric bulb of 200 W is used for 5 hours per day. Calculate the energy consumed by the bulb in a week.

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Q494

Which one of the following statement about magnetic field lines is not correct?

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Q495

The law which relates the resistance of conductor to current flow is called?

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Q496

Wires in our homes are made of metal because metals are

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Q497

Electric field lines

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Q498

Which of the following is based on the heat effect of electric current?

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Q499

A circuit has a fuse having a rating of 5A. What is the maximum number of 100 W-220 V bulbs that can be safely connected in parallel in the circuit?

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Q500

Which one of the following is an ohmic conductor?

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