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a 20 light bulb is connected to a battery of a car. what electric current flows through the bulb? power?

2007-11-27 13:27:18 · 1 answers · asked by lindsay d 1 in Science & Mathematics ➔ Physics

1 answers

"a 20 light bulb": 20 what? 20 watts?

I couldn't resist. I will assume it's 20 watts.

Current
P = 20 W = E*I = 12 V*I
So
I = 20 W / 12 V = 1.67 amps

Power
20 W

2007-11-27 14:35:32 · answer #1 · answered by sojsail 7 · 0⤊ 0⤋

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