Question

An electric heater of resistance 230 ohm is connected to 230 v calvulatebthe heat energy produced by it in second

Answer 1

Given ,

Resistance (r) = 230 ohm

Potential difference (v) = 230 v

Time (t) = 1 sec

We know that , the Joule's law or heating effect of electric current is given by

$\large \sf \fbox{H = \frac{ {v}^{2}t }{r} }$

Thus ,

$\sf \mapsto H = \frac{ {(230)}^{2} \times1 }{230} \\ \\\sf \mapsto H = 230 \: \: joule$

$\therefore \sf \underline{The \: heat \: produced \: is \: 230 \: j}$

Answer 2

Answer:

Physics work sheet 1.An electric heater of resistance 230 ohm is connected to 230V supply. Calculate the heat energy produced by it in 1 second. 2. Calculate the amount of heat energy produced when 1A current flows through a 1 ohm resistance wire for 1 hour(60minutes ).