Q281
Open questionElectric current is the flow of . . . . . . . .
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Physics GK · all questionsElectricity and Magnetism
Electricity and Magnetism
practice.
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Q282
Open questionWhich one of the following statement is not correct?
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Q283
Open questionWhat is the SI unit of electrical resistance?
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Q284
Open questionMoving electric charge produces
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Q285
Open questionThe best conductor of electricity among the following is
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Q286
Open question. . . . . . . . is the resistivity of copper.
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Q287
Open questionThe current flowing through a resistor is inversely proportional to its . . . . . . . .
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Q288
Open questionThe angle between the magnetic meridian and the geo-graphical meridian at a place is
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Q289
Open questionAssertion (A) Bending a wire does not effect electrical resistance.
Reason (R) Resistance wire is proportional to resistivity of materials.
Reason (R) Resistance wire is proportional to resistivity of materials.
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Q290
Open questionA device which converts chemical energy into electrical energy is called
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Q291
Open questionKeeping the voltage constant, if more lamps are connected one by one in a series circuit, the over all current in the circuit:
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Q292
Open questionWhich of the following metals is used for the manufacture of heating elements provided in electric iron?
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Q293
Open questionTo maintain the current in a given electrical circuit, the cell has to spend . . . . . . . . energy stored in it.
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Q294
Open questionA current of 0.5 A flows through the resistor in the circuit and have a voltage source with 6 V. The power supplied to the resistance by the source will be . . . . . . . .
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Q295
Open questionConsider the following statements.
An ordinary light bulb has a rather short life because the
1. Filament wire is not uniform.
2. Bulb cannot be evacuated completely.
3. Wires supporting the filament melt at high temperatures.
Which of the above statements are correct?
An ordinary light bulb has a rather short life because the
1. Filament wire is not uniform.
2. Bulb cannot be evacuated completely.
3. Wires supporting the filament melt at high temperatures.
Which of the above statements are correct?
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Q296
Open questionThe potential difference is 40V. Find the work done in moving a charge of 0.5 C?
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Q297
Open questionA transformer
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Q298
Open question. . . . . . . . through a plane surface is the product of the magnetic flux density normal to the surface and the area of the surface.
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Q299
Open questionWhat is the term of the space around a magnet where its influence can be detected?
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Q300
Open questionThe potentiometer is superior to a voltmeter for measuring a potential difference because
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