Physics GK · all questions

Electricity and Magnetism
practice.

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Q301

Flemings "Left hand Rule" is associated with the effect of

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Q302

Two identical resistors of 10Ω are connected in parallel in a circuit. This combination is connected with third resistor of 10Ω in series. The equivalent resistance of the combination will be equal to . . . . . . . .?

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Q303

Which of the following are insulator?
1. Mica and Quartzs
2. Metal and Rubber
3. Metals and Mica

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Q304

How many units of electricity will be consumed if you use a 60 watt electric bulb for 5 hours everyday for 30 days?

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Q305

A transformer works on the principle of

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Q306

The product of conductivity and resistivity of a conductor

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Q307

If resistance increases then electric current . . . . . . . .

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Q308

Which of the following is a Paramagnetic substance?

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Q309

Three equal resistances of 6Ω are connected in parallel with each other in a circuit. The equivalent resistance of this combination will be . . . . . . . .

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Q310

Of the two bulbs,one glows brighter than the other. Which bulb has a higher resistance?

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Q311

The resistivity value of a substance is determined by its conductivity. Metals with low resistivity . . . . . . . .

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Q312

An electric bulb of 100 W is used for 8 hours each day. The energy used by the bulb in 5 days will be . . . . . . . . unit.

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Q313

When the short circuit condition occurs, the current in the circuit

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Q314

A wire with a resistance of 12 Ω is doubled its radius. Calculate the new resistance of the wire.

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Q315

A household consumes 200 units of energy in a month. How much is this energy in joules?

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Q316

If two resistors have the same potential, they are:

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Q317

If the value of a fuse is 8A, then:

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Q318

An electric lamp of 120 W is used 8 hours per day. Calculate the units of energy used by the lamp in one day.

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Q319

When the direction of motion of coil is perpendicular to the electromagnetic field, then the value of induced current is . . . . . . . .

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Q320

The electric current does not flow between two properly connected charged bodies if they are having

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