Question

A 200v-100 W bulb is Connected to a 110v source
Calculate the power consumed by the bulb.
(no spams)​

Answer 1

Answer:

30.25 W

Explanation:

When Voltage 'V' is 200 V the Power 'P' Consumed is 100 W,

Let the resistance of the bulb be R

then we know that,

$R=\frac{V^{2} }{P}$

$R=\frac{200^{2} }{100}$

R = 400 Ω

Now when Voltage is 110 V we again have by the same formula,

$P=\frac{V^{2} }R} \\P=\frac{110^{2} x}{400}$

P = 30.25 W