Q361
Open questionWhat does the rating of electricity displayed on the electric bulb mean 100 watts?
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Physics GK · all questionsElectricity and Magnetism
Electricity and Magnetism
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Q362
Open questionIf a bulb of 100 watt burns for 10 hours, the expenditure of electricity will be
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Q363
Open questionMagnetic meridian is an imaginary
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Q364
Open questionWhich of the following device protect electrical devices from voltage spikes?
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Q365
Open questionIn comparison to an electric bulb, a fluorescent tube is preferred because
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Q366
Open questionIn a house, 150 units of energy is used during a month. What will be the amount of this energy in joules?
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Q367
Open questionAlternating current can not be measured by DC ammeter because
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Q368
Open questionOhm's law is valid in case of
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Q369
Open questionThe formula for electric current is I = . . . . . . . . /time (t).
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Q370
Open questionIf the speed of a moving magnet inside a coil increases, the electric current in the coil
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Q371
Open questionIn an ideal transformer:
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Q372
Open questionCoulomb per second is equivalent to
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Q373
Open questionWhich of the following metals is a better conductor of electricity?
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Q374
Open questionA current of 0.75A is drawn by a filament of an electric bulb in 8 minutes. Find the amount of electric charge flowing through the current.
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Q375
Open questionSuperconductor is the conductor whose . . . . . . . . is zero
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Q376
Open questionA fuse wire is characterised by
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Q377
Open questionWater is heated with a coil of resistance R connected to domestic supply. The rise of temperature of water will depend on
1. supply voltage.
2. current passing through the coil.
3. time for which voltage is supplied.
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1. supply voltage.
2. current passing through the coil.
3. time for which voltage is supplied.
Select the correct answer;
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Q378
Open questionThe metal detectors operated on which of the law:
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Q379
Open questionTwo wires have their lengths, diameters and resistivities all in the ratio of 1 : 2. If the resistance of the thinner wire is 10 ohm, the resistance of the thicker wire is
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Q380
Open questionWhich is not attracted by a simple magnet?
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