Domestic electrical wiring is basically a
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Physics GK · all questionsElectricity and Magnetism
Electricity and Magnetism
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Which one of the following statements is correct with regard to the material of electrical insulators?
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If a 50 W bulb consumes 1000 J of energy, then the time taken by the bulb is?
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How much work is done to moving a charge of 5C across two points having a potential difference of 11V?
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A current of 0.6A is drawn by an electrical device in 10 minutes. Find the amount of electric charge flows through the circuit.
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The symbol represents.
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What is the difference between a CFL and an LED Lamp?
1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi-conductor material.
2. The average life span of a CFL is much longer than of an LED lamp.
3. A CFL is less energy efficient as compared to an LED lamp.
Which of the statements given above is/are correct?
1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi-conductor material.
2. The average life span of a CFL is much longer than of an LED lamp.
3. A CFL is less energy efficient as compared to an LED lamp.
Which of the statements given above is/are correct?
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When electrical energy is converted into motion
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How much work is done in moving a charge of 5C across two points having a potential difference of 17V:
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The resistivity of an electric conductor depends on:
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Which of the following substances has the highest resistivity?
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The resistance of an ideal voltmeter is
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X-rays are . . . . . . . . waves.
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A current of 0.8 A is drawn by a filament of on electric bulb for 3 minutes. Amount of electric change that flows through the circuit is . . . . . . . .
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Electromagnet is constructed with which of the following?
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A current of 5A is taken by a filament for 10 minutes. Find the amount of electric charge flowing through the circuit.
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A rectangular coil of copper wire is rotating in a magnetic field. The direction of the induced current changes once in each?
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Assertion (A): Light Emitting Diode (LED) lamps offer longer service life as compared to Compact Fluorescent Lamps (CFL).
Reason (R): Light Emitting Diodes (LED) lamps are more energy efficient as compared to the Compact Fluorescent Lamps (CFL).
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Reason (R): Light Emitting Diodes (LED) lamps are more energy efficient as compared to the Compact Fluorescent Lamps (CFL).
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Electric current is equals to
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Which is the gas inside an electric bulb?
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