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A 30.0 W light bulb in a simple DC circuit is powered by a 9.0 V battery. Assuming there are no other circuit elements, how much current flows through the lightbulb?

A 30.0 W light bulb in a simple DC circuit is powered by a 9.0 V battery. Assuming there are no other circuit elements, how much current flows through the lightbulb?
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1 vote
A 30.0 W light bulb in a simple DC circuit is powered by a 9.0 V battery. Assuming there are no other circuit elements, how much current flows through the lightbulb?

User Kumar Lokesh Rathod
by
7.1k points

1 Answer

5 votes
As we know,

power = (voltage * current) \\ so \: current = (power / voltage)
User Gileneusz
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8.2k points
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