Q181
Open questionWhen several resistances are added to . . . . . . . ., their combined resistance is less than the minimum resistance among them?
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Physics GK · all questionsElectricity and Magnetism
Electricity and Magnetism
practice.
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524
Questions
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Q182
Open questionFaraday's Laws are consequence of conservative of
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Q183
Open questionIf the potential difference and current through a circuit are doubled, the resistance of the circuit is:
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Q184
Open questionWhich of the following is not an example of the heating effect of current?
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Q185
Open questionThe SI unit of electric dipole moment is
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Q186
Open questionA current carrying conductor is associated with
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Q187
Open questionThe electrical circuit consists of . . . . . . . .
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Q188
Open questionAssertion (A): The temperature of a metal wire rises when an electric current is passed through it.
Reason (R): Collision of metal atoms with each other releases heat energy.
Reason (R): Collision of metal atoms with each other releases heat energy.
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Q189
Open questionAn electric bulb is connected to a 220 V generator. The current generated through it is 0.50A. How much power is the bulb?
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Q190
Open questionAn electrical device consumes 1000 joules of energy in a second. If it runs for one hour, what will be the amount of electricity consumed by it?
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Q191
Open questionWhich of the following substances has very high resistance?
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Q192
Open questionWhat is the starting voltage of an AA battery used for home gadgets such as remote controls, small toys and wireless kitchen appliances?
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Q193
Open questionAlternate current is not preferable
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Q194
Open questionMagnetism in materials is due to
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Q195
Open questionWhich equipment is used to transform mechanical energy into electrical energy?
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Q196
Open questionWhat precaution should be taken to avoid the overloading of domestic electric circuits?
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Q197
Open questionModern electrical generator works on . . . . . . . . Principle
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Q198
Open questionWhich of the following scientists has given a law governing the force of attraction/repulsion between two charged particles?
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Q199
Open questionWhat is the effective resistance (in Ω) of two resistors 20Ω and 30Ω connected in parallel?
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Q200
Open questionWhich of the following is a good conductor of heat but a bad conductor of electricity?
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