Question

If power is 100 watt and voltage is 220. Find its resistance.
(A) 2.5
(B) 3.5
(C) 4.5 hp
(D) 5.5​

Answer 1

Given:

Power (P) = 100 Watt

Voltage/Potential difference (V) = 220 Volt

To Find:

Resistance (R)

Answer:

Formula of Electric Power:

$\boxed{ \bf{P = \dfrac{V^2}{R}}}$

By substituting values in the formula we get:

$\rm \implies 100 = \dfrac{ {220}^{2} }{R} \\ \\ \rm \implies R = \dfrac{484 \cancel{00}}{ \cancel{100}} \\ \\ \rm \implies R = 484 \: \Omega$

$\therefore$ $\boxed{\mathfrak{Resistance \ (R) = 484 \ \Omega}}$