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A point charge has a charge of 2.50×10?11C .
Part A
At what distance from the point charge is the electric potential 80.0V ? Take the potential to be zero at an infinite distance from the charge.
Part B
At what distance from the point charge is the electric potential 31.0V ? Take the potential to be zero at an infinite distance from the charge.
The current through two identical light bulbs connected in series is 0.25 amps. The voltage across both bulbs is 100 volts. Find the resistance of a single light bulb.
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