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Which of the following is a unit of power?

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Important Questions on Electricity and Magnetic Effect of Current

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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power

If the current through a resistor is increased by 50%, the increase in power dissipated will be (assume the temperature remains constant)

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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
Which of the following terms does not represent electrical power in a circuit ?
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
The cost of coal is Rs 5 per kg and can produce energy of 20 MJkg-1. If a power station uses coal to produce electricity with 25 % efficiency, then the cost of coal for producing 1 unit (1 kWh-1) of electricity in Rs.
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
One kilowatt hour=
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
Commercial unit of electrical energy one kilowatt hr. (1 kWh) is equivalent to:
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
An electric bulb is connected to a 220 V generator. The current is 500 mA. What is the power of the bulb?
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
Consider two circuits:
(i) A: in which N identical bulbs are connected in series across a battery of emf E.
(ii) B: in which N bulbs identical to those in A are connected in parallel across similar battery of emf E.
PA: Power dissipating in each bulb in A.
PB: Power dissipating in each bulb in B.
PAT : Total power delivered by battery in circuit A.
PBT : Total power delivered by battery in circuit B.
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
How much time will be taken by a 100 W bulb to consume one unit of energy?
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
A heating unit of an electric stove is rated at 880 W. It is connected to a power supply of 220 V the current it will consume.
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
Which of the following term does not represent electric power (P) in electric circuit ?
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
Figure shows three electrical appliances connected to a 220 V ac mains. What is the amperage (current rating) of the fuse that should be used in the circuit?
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be
MEDIUM
Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
Which formula is not correct for R? (R=resistance)
EASY
Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
An electric bulb is rated 220 V, 100 W. It is operated on 110 V, then the power consumed will be :
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
A household consumes 1 kwh  of energy per day. This energy in joules is:
MEDIUM
Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
The maximum number of 60 W bulbs that can be run from the main supply of 220 V if you do not want to overload a 5 A fuse:
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Which one of the following  alternating current is supplied in our house hold circuits?
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
1 kWh=?
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Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
The practical unit of electrical energy 1 kWh means
EASY
Science & Pedagogy>Physics>Electricity and Magnetic Effect of Current>Electric Power
Which of the following terms does not represent electrical power in a circuit?