Q241
Open questionWhich of these converts chemical energy into electrical energy?
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Physics GK · all questionsElectricity and Magnetism
Electricity and Magnetism
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Q242
Open questionSome resistors are connected in series in the circuit, the value of current through the circuit is?
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Q243
Open questionAn electric bulb of 100 W is used for 8 hours per day. The bulb will consume . . . . . . . . Unit energy in a week.
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Q244
Open questionThe property of electric current which is applicable in the fuse wire is
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Q245
Open questionWhich finger shows the direction of current in Fleming's left hand rule?
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Q246
Open questionWhich of the following is arranged in order of decreasing conductivity?
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Q247
Open questionThe magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as
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Q248
Open questionFluorescent tubes are fitted with a choke. The choke coil
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Q249
Open questionWhen an electric current of 4A flows from a source though an electric heater, its potential differential is 60V. If the potential difference increases to 165V, what will be the current?
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Q250
Open questionWhen the potential difference is 18V then the work is done moving a charge of 4C across two points is . . . . . . . .
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Q251
Open questionIf electric resistance is to be decreased, then the number of resistances should be connected in . . . . . . . .
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Q252
Open questionGood conductor of electricity is
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Q253
Open questionHow much work is done in moving a charge of 3 C across two points with a potential difference of 10 V?
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Q254
Open questionThe filament of a halogen lamp is an alloy of
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Q255
Open questionAfter long periods of use, a grey spot develops on the inside of a bulb. This is because
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Q256
Open questionIf the current and resistance are 10 A and 50 Ω respectively. Find the potential difference.
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Q257
Open questionIndicate the correct arrangement for electromagnetic radiation in order of their increasing wavelength.
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Q258
Open questionWhich of the following law describes the relation between the current flowing through a metallic wire and the Potential difference in its ends?
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Q259
Open questionAssertion (A): In India, electricity distribution companies calculate the consumption of electricity in kWh.
Reason (R): Electrical system in India works at a frequency of 60 Hz.
Reason (R): Electrical system in India works at a frequency of 60 Hz.
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Q260
Open questionThe working principle of power transformer is based on . . . . . . . .
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