Question

a current of 2 ampere produces 200 joule of heat in a wire in a given period of time if the current is increased to 4 ampere how much heat will be produced in the same time?

Answer 1

Answer:

The answer is 800 joules.

Explanation:

Given data:

Current, I = 2 Ampere

Amount of heat produced = 200 Joule

Current increased, I = 4 Ampere

The formula of Heat: (Here the power is taken as heat)

H = I2R ( For 2 ampere)

200 J = (2)2 x R

R = 200 / 4 = 50 ohm  

The resistance is 50 ohm.

Now for 4 amperes :

H = 12R

H = (4)2 X 50 = 16 X 50 = 800 Joules.

So the heat flowing through 4 A will be 800 Joules.

Answer 2

Answer:

pls see the above attachment