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Physics
Two resistors of 4 Ω and 6 Ω are connected in parallel. The combination is
connected across a 6 volt battery of negligible resistance. Calculate:
( i) The power supplied by the battery,
(ii) The power dissipated in each resistor.
Chapter: [8] Current Electricity
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Name the unit which a consumer pays as the cost of electricity.
Chapter: [8] Current Electricity
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State the commercial unit of electrical energy.
Chapter: [8] Current Electricity
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What do you mean by 'power-voltage' rating of electrical appliances?
Chapter: [8] Current Electricity
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Name the physical quantity which equals the product of voltage and current.
Chapter: [8] Current Electricity
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The marking on an electric bulb reads; 200 V, 60 W. What does it mean?
Chapter: [8] Current Electricity
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The resistance of 100 W (220 V) bulb is greater than that of 60 W (220 V) bulb. Is it true or false?
Chapter: [8] Current Electricity
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What will be the current drawn by an electric bulb of 40 W when it is connected to a source of 220 V?
Chapter: [8] Current Electricity
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What do you mean by watt-hour?
Chapter: [8] Current Electricity
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What do you mean by direct current?
Chapter: [8] Current Electricity
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What do you mean by A.C.?
Chapter: [8] Current Electricity
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How does an alternating current differ from the direct current?
Chapter: [8] Current Electricity
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Which type of current does a generator with commutator produce?
Chapter: [8] Current Electricity
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What do you mean by short-circuiting?
Chapter: [8] Current Electricity
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State two important precautions you should observe while using electricity?
Chapter: [8] Current Electricity
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Many electrical appliances and circuits are earthed grounded. What is the reason for this?
Chapter: [8] Current Electricity
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Are switches connected in the neutral or live wire?
Chapter: [8] Current Electricity
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What do you mean by a solenoid?
Chapter: [8] Current Electricity
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Can a copper wire be used as a fuse wire?
Chapter: [8] Current Electricity
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What type of electricity is supplied to us at houses?
Chapter: [8] Current Electricity
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