A copper penny has a mass of 31 g being electrically, Ask an Expert

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A copper penny has a mass of 3.1 g. Being electrically neutral it contains equal amounts of positive and negative electricity.

a. What is the magnitude of these charges?

b. The current (charge/time) in a 100 W, 110 V light bulb is 0.91 A. How long would it take for the charge equivalent to that in a penny to pass through the bulb?

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