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In order to measure voltage in a circuit, voltmeter is always connected in parallel. Discuss.

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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In order to measure current in a circuit, why ammeter is always connected in series?

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Two points on an object are at different electric potential. Does charge necessarily flow between them?

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Can current flow in a circuit without potential difference?

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What is the difference between a cell and a battery?

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Why in conductors charge is transferred by free electrons rather than by positive charge?

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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A light bulb is switched on for 40s. If the electrical energy consumed by the bulb during this time is 2400 J,

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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Connect a battery to a small 2.5V light bulb and observe the brightness of the bulb.

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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A bird can sit harmlessly on high tension wire- But it must not reach and grab neighbouring wire. Do you know why?

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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Which metal is used as the filament of an electric bulb? Explain with reason.

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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How long does it take a current of 10 mA to deliver 30 C of charge?

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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Describe some safety measures that should be in connection with the household circuit.

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How does short circuit occur and how can it be avoided?< .

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Describe briefly the hazards of household electricity.

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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Why is the voltage used for domestic supply much lower than the voltage at which the power is transmitted?

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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The voltage chosen for the transmission of electrical power over large distances ,

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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Define the term time period and frequency.

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What is difference between d.c. and a.c.?

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How can the cost of electricity consumed in a house be calculated?

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What is kilowatt-hour? How energy in kilowatt-hour can be obtained?

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