A cell phone battery uses chemistry to create a charge separation between the terminals (anode and cathode). Such a battery is listed as having a capacity of Q = 8.3 × 10^-6 C. (a) If this charge separation consisted entirely of free electrons, how many free electrons would be present in the battery? (b) If the operation of the cellphone requires that 1.1 × 106 electrons move through the circuit every second, how long will a full charge of the battery last in seconds? (c) What current in amperes is passing through the phone?

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.