The formula for the power output P of a battery is P = VI  RI where
Question:
The formula for the power output P of a battery is P = VI  RI² where V is the electromotive force in volts, R is the resistance
in ohms, and I is the current in amperes. Find the current that
corresponds to a maximum value of P in a battery for which
V = 12 volts and R = 0.5 ohm. Assume that a 15ampere fuse
bounds the output in the interval 0 ≤ I ≤ 15. Could the power
output be increased by replacing the 15ampere fuse with a
20ampere fuse? Explain.
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P VIRI 121 05120 I 15 P 0 when I 0 P 675 w...View the full answer
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