Question

current through a resistor is made 3 times its initial value . by how many times ,does the rate of heat produced in the resistor increase.

Answer 1

The Heat also increased by three times because heat produced is directly proportional to the square of current.

I hope it will help you.

Answer 2

If the current through a resistor is made 3 times its initial value, then the rate of heat produced in the resistor increase by 9 times

Explanation:

Due to flow of electric current in an electrical appliance, heat is produced in it.  The heat produced in the electrical appliance is given by :

$H=I^2Rt$

I is electric current

R is resistance

t is time taken

It is mentioned that, the current through a resistor is made 3 times its initial value, I' = 3 I. Now the heat produced becomes :

$H'=I'^2Rt\\\\H'=(3I)^2Rt\\\\H'=9\times I^2Rt$

or

H' = 9 H

So, if the current through a resistor is made 3 times its initial value, then the rate of heat produced in the resistor increased by 9 times.

Learn more,

Heating effects of electric current

https://brainly.in/question/10566734