Physics GK · all questions

Electricity and Magnetism
practice.

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Q261

X-rays region lies between

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Q262

A simple circuit contains a 12 V battery and bulb having 24 Ω resistance. When turn on the switch, the ammeter connected to the circuit would read

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Q263

The . . . . . . . . is connected in parallel in an electric circuit.

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Q264

A common fluorescent tube contains . . . . . . . .

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Q265

Five bulbs each of 100 watt capacity in a tunnel are illuminated continuously for twenty hours. The consumption of electricity will be

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Q266

If 2 ampere current flow through a conductor having potential difference 4. Then resistance of conductor will be:

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Q267

The material used in electric heater is

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Q268

An electric lamp, whose resistance is 40 ohm, and an 8 ohm conductor were added in series with a 12V battery. What is the total resistance of the circuit?

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Q269

A filament of electric bulb carries 0.75A current in 1 minute. Find the amount of electric charge flowing through the electrical current.

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Q270

According to Ohm's law, which of the following statements is true?

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Q271

Lenz's Law is consequence of the law of conservative of

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Q272

Which of the following option represents the consumption of power in ascending order?

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Q273

Two wires are made having same length l and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?

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Q274

A positively charged particle projected towards West is deflected towards North by a magnetic field. What is the direction of magnetic field?

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Q275

If the potential difference between the terminals of the electric heater is 60 V, when it receives a current of 4A from the source. If the potential difference increases to 150V, what will be the current received by the heater?

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Q276

If the electric charge (Q) and time (t) are given, what would be the formula for determining the electric current (I)?

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Q277

The work done is 36J across two points which have potential different of 12V. The electric charge flowing across those points is . . . . . . . .

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Q278

Which of the following law is related to the heating effect of electric current?

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Q279

An electric bulb of 100 watt is used for 4 hours. The unit of electric energy used is

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Q280

How much work is done in moving a charge of 4 C across two points having a potential difference of 11V?

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