Question

1. A pump raises water by spending 4 x 105 J of
energy in 10 s. Find the power of pump.
104 W​

Answer 1

Explanation,

Given,

• Work done (W) = 4 × 10⁵ J
• Time taken (t) = 10 s

To Find,

• The power of pump.

Solution,

Applying power formula,

P = W/t

[ Put the values ]

↦ P = 4 × 10⁵ / 10

↦ P = 4 × 10⁴ watt

Therefore,

The power of pump is 4 × 10⁴ watt.

For information about Power,

Definition :

• Power can be defined as the rate at which work is done i.e. energy converted.

Formula :

• The formula for power is , P = W/t.

Unit :

• MKS unit of power is watt (W).

• CGS unit of power is Erg/s .