Question

Find electric power, when 500 V voltage is applied across a resistor which carry 20 A current?​

Answer 1

Answer:

100 voltage is true answer

Answer 2

Answer:

100 voltage

Explanation:

(i) Calculation of Current. The current can be calculated by using Ohm's law equation: <br>

<br> Here, Potential difference,

volts <br> Current,

(To be calculated) <br> Resistance,

ohms <br> Putting these values in the above formula, we get: <br>

<br> So,

<br>

<br> = 0.5 ampere <br> Thus, the current flowing in the electric iron in 0.5A. <br> (ii) Calculation of Heat Energy. The heat energy in joules can be calculated by using the formula: <br>

<br> Here, Current,

<br> Resistance,

<br> And, Time,

<br> Putting these values in the above formula, we get: <br>

<br> = 1250 joules