Question

A current of 2A produces 200J of heat in a wire in a given period of time if the current increases is 4A how much heat will be produced in same time

Answer 1

"A current of 2A produces 200J of heat in a wire in a given period of time if the current increase is 4A

We have to find heat produced.

By using formula H = I²RT

H1/H2 = I²/I'²

By putting values in the above equation we get,

H2= 200×16/4 = 800J.

Answer: 800J heat will be produced in same time.

"

Answer 2

Answer:Heat is directly proportional to current ( i)2 so h=ci2 where c is constant in the place of directly proportional

H=ci2

H/ i2=c

200/4=c

For second wire

H=ci2

H/ i2=c

H/16=c

C=C

200/4=H/16

200*16/4=H

H=200*4

H=800 joule

Hope this will help you

Explanation: