Question

find the heat energy produced in a resistance of 10W then 5A current flows through it for 5 minutes in 3mark 12th

Answer 1

Answer:

The heat energy produced in the resistance is 75 kJ.

Explanation:

Given that,

Resistance, R = 10 ohms

Current, I = 5 A

Time, t = 5 min = 300 s

Due to flow of electric current, a certain amount of heat energy will be produced. It is given by the formula as :

\begin{gathered}H=I^2Rt\\\\H=(5)^2\times 10\times 300\\\\H=75000\ J\\\\H=75\ kJ\end{gathered}

H=I

2

Rt

H=(5)

2

×10×300

H=75000 J

H=75 kJ

So, the heat energy produced in the resistance is 75 kJ. Hence, this is the required solution.

Learn more,

Heating effects of electric current