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Physics 9 Chapter 6 - Work and Energy - 27
1.
What is the formula of power?
a) Power = Work done x Time taken
b) Power = Work done / Time taken
c) Power = Time taken / Work done
d) Power = Time taken + Work done
2.
What is the formula of power?
a) P = t - W
b) P = W + t
c) P = W / t
d) P = t / W
3.
Power is a .................quantity?
a) Fundamental
b) Vector
c) Base
d) Scalar
4.
Rate of doing work is called..............?
a) Power
b) Momentum
c) Torque
d) Energy
5.
What is the SI unit of power?
a) Pascal
b) Joule
c) Newton
d) Watt
6.
With which symbol, SI unit of power is denoted?
a) Symbol N
b) Symbol p
c) Symbol j
d) Symbol W
7.
What is the value of 1kW?
a) 1kW = 10 000 W
b) 1kW = 1000 W
c) 1kW = 100 W
d) 1kW = 100 000 W
8.
What is the value of 1kW?
a) 1kW = 10
5
W
b) 1kW = 10
4
W
c) 1kW = 10
6
W
d) 1kW = 10
3
W
9.
What is the value of 1MW?
a) 1MW = 10 000 W
b) 1MW = 1 000 W
c) 1MW = 1000 000 W
d) 1MW = 100 000 W
10.
If a body does work at the rate of 1 joule per second, what will be its power?
a) One newton
b) One pascal
c) One watt
d) One joule
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