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1 watt is equal to:

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Important Questions on Effect of Energy: Work, Power and Energy

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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
A force of 40 N acts on a body, and body moves through a distance of 2 metre at an angle of 45° in the direction of the force. The work done by the force is 
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>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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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
An object of mass 15kg is moving with uniform velocity of 4m/s. What is the kinetic energy possessed by the object?
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
A household consumes 1 kwh  of energy per day. This energy in joules is:
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
Which of the following terms does not represent electrical power in a circuit ?
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>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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Physical Science>Physics>Effect of Energy: Work, Power and Energy>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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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
An electric bulb has rating of 30 W, 12 V. The maximum current that can pass through it will be :
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
Which of the following term does not represent electric power (P) in electric circuit ?
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power

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

MEDIUM
Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
Which formula is not correct for R? (R=resistance)
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
The practical unit of electrical energy 1 kWh means
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power

A water pump lifts water from a level 10 m below the ground. The water is pumped at the rate of30 kg/min with negligible velocity. Calculate the minimum power the pump should have to do this work.

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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
One kilowatt hour=
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
Electrical power is given by
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
Flying birds has
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
A boy of mass 50 kg runs a stair case of 45 steps in 9 sec. If the height of each steps is 15 cm, find his power. (Take g=10 ms-2).
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
1 kWh=?
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Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
Commercial unit of electrical energy one kilowatt hr. (1 kWh) is equivalent to:
HARD
Physical Science>Physics>Effect of Energy: Work, Power and Energy>Power
A pump on the ground floor of a building can pump up water to fill the tank of 30 m3 in 15 min. If the tank is 40 m above the ground, and the efficiency of the pump is 30%, the power consumed by the pump is g=10 m/s2