1 kWh =
3.6 x 106 Js
3.6 x 105 Js
3.6 x 109 Js
3.6 x 10-6 Js
1 hp is equal to
0.746 kW
7.46 kW
74.6 kW
746 kW
An object of mass 15 kg is moving with a uniform velocity of 4ms-1.What is the kinetic energy possessed by the object?
120 J
100 J
220 J
200 J
An object of mass 12 kg is at a certain height above the ground. If the potential energy of the object is 480 J,find the height at which the object is with respect to the ground. Given g = 10 ms-2
4 m
4 mm
40 m
400 m
The energy possessed by a body due to its motion is called
Kinetic energy
Potential energy
Static energy
Mechanical energy
A radio set of 60 watts runs for 50 hours.How many 'units ' (kWh) of electrical energy is consumed ?
6 kWh
4 kWh
3 kWh
30 kWh
Which is the correct expression for potential energy of an object?
mgh
1/2 mv2
2mgh
mgh2
Unit of workdone is
Newton(N)
Watt(W)
Joule(J)
Pascal
Find the energy possessed by an object of mass 10 kg when it is at a height of 6 m above the ground.Given,g = 9.8 m / s2
588 J
688 J
858 J
600 J
The energy used in households, industries and commercial establishments are usually expressed in
Joule
Watt
Kilowatt - hour
Volt