How many joules of energy does the battery lose in a minute

Reference no: EM132101040

Question: A 12-V battery causes a current of 0.80A through a resistor.

A) What is its resistance?

B) How many joules of energy does the battery lose in a minute?

You buy a 75-W lightbulb in Europe, where electricity is delivered to homes at 240 V.

If you use the lightbulb in the United States at 120 V (assume its resistance does not change), how bright will it be relative to 75-W 120-V bulbs? [Hint: Assume roughly that brightness is proportional to power consumed.]

Reference no: EM132101040

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