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Potential Difference Calculations Worksheet

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E VQ

V=E Units: V is V (volts)


Potential Difference Calculations Worksheet Q Q is C (coulombs) E is J (joules)

1. Find the unknown quantity:


potential difference = energy
charge
a) V = ? b) V = 9 V c) V = 1.5 V
E = 45 J E=? E = 225 J
Q = 15 C Q = 150 C Q=?

2. Find the unknown quantity (CONVERT FIRST to volts, joules, or coulombs)

a) V = 1000 mV = b) V = ? c) V = 1.21 GV =
VE=? E = 1.25 kJ = J
Q = 20 C Q = 1500 C VE=?
Q = 2 000 000 C

WORD PROBLEMS

1. The potential difference between the two terminals on a battery is 9 volts. How much work
(energy) is required to transfer 10 coulombs of charge across the terminals?

2. Ten joules of work (energy) are required to transfer 2 coulombs of charge from X to Y. What is the
difference in potential between these two points?

3. It requires 600 joules of energy to transfer a quantity of charge between points C and D of a circuit,
which have a potential difference of 30 volts. How much charge is transferred?

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