Question

pls someone solve this
13. State joules law of heating and write its mathematical form. The current through the resistor is
made three times its initial value. Calculate how it will affect the heat produced in the resistor.

Answer 1

Answer:

joules law state that heat produced in conductor is directly proportional to the square of electric current passing through them, resistance and time taken to pass electric current.

H=I^2×R×T

again, if we increase current 3times in conductor from its initial then heat produced in conductor increases 9times.

let at initial time,electric current=I

Resistance=R

time=T

so,H=I^2RT

again,electric current=3I

Resistance=R

time=The

so,H=(3I)^2×R×T

H=9I^2RT

therefore,heat produced in second time is 9times more than initial.