Question

and electric iron resistance 20 ohm takes a current of 5 a . calculate the heat developed in 0.5 minutes​ ans. Answer:

\boxed{\mathfrak{Heat \ developed \ (H) = 15 \ kJ}}Heat developed (H)=15 kJ​

Given:

Resistance (R) = 20 Ω

Current (I) = 5 A

Time (t) = 0.5 min = 30 s

To Find:

Heat developed (H) in the electric iron

Explanation:

Formula:

\boxed{ \bold{ \sf H = I^2Rt}}H=I2Rt​

Substituting values of I, R & t in the equation:

\begin{gathered}\sf \implies H = {5}^{2} \times 20 \times 30 \\ \\ \sf \implies H = 25 \times 20 \times 30 \\ \\ \sf \implies H = 15000 \: J \\ \\ \sf \implies H = 15 \: kJ\end{gathered}⟹H=52×20×30⟹H=25×20×30⟹H=15000J⟹H=15kJ​

\therefore∴

Heat developed (H) in the electric iron = 15 kJ
that is corret answer​

Answer 1

Answer:

yes

Explanation:

hope this is write answer