Question

A pump raises water by spending 4× 10⁶j of energy in 100 seconds. Find the power of the pump​

Answer 1

Answer:

power = energy/ time

power=(4×10^6)/100 J/sec

=(4×10^4) W

Answer 2

Answer :-

40,000 watts

EXPLANATION :-

Given:-

• Work done by the body is 4×10⁶ J
• Time taken by the body is 100 s

To find :-

• Power of the body

Solution :-

We have formula to find the power that is

Power = Work done / Time taken

Substituting the values ,

P = 4× 10⁶/100

P = 4×10⁶/10²

P = 4 × 10⁶ × 10^-2

P = 4 × 10⁴

P = 4 × 10,000

P = 40,000 watts

So, the power of the body is 40,000 watts

Know more :-

Power is defined as work done in unit time is called power

• S.I units of power are watt , W
• Power is a scalar quantity
• Dimensional formula of power is [M¹ L² T^-3]

1 W = 1 J/s

And We have other formula to find the power when velocity and force given that is

P = F × V