Question

Calculate the current and resistance of a 100 W, 200V electric bulb.​

Answer 1

Answer:

0.5 Amps, 400 ohms

Explanation:

Given :

Power rating of the bulb = 100 watts

Potential difference of the electric bulb = 200 volts

To find :

Current passing through the electric bulb

Resistance of the electric bulb

Power = V×I

100=200×I

I = 100/200

I = 0.5 Amperes

Now using the ohms law:

V=I×R

200=0.5×R

R=200/0.5

R = 400 ohms

The resistance of the electric bulb is equal to 400 ohms.

Answer 2

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