Question

A radio set is rated 200W, 240V; Explain the meaning of the statement.

Answer 1

Explanation:

Explanation:

We are given that:

Voltage "V" = 240 V

Current "I" = 8 A

Time "T" = 10 min = 600 sec

To find:  

(a) Power of kettle

(b) Energy transferred in 10 min

We know that:

P = VI

So,

(a) P = 240 X 8

P = 1920 J

(b) We know that energy = P X T

T = 10 min = 600 sec

So,

E = 2300 X 60 0

E = 1,152,000 J

E = 1, 152 KJ

Thus the power is 1920 J and the energy dissipated in 10 minutes is E = 1, 152 KJ

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