A charge of $6 C$ $6 C$ is passing through points A and B on a circuit. If the charge's electric potential changes from $45 J$ $45 J$ to $27 J$ $27 J$ , what is the voltage between points A and B?

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Answer 1 · 2017-08-05T13:46:39

The voltage is $= 3 V$ $=3V$

The charge is $Q = I t$ $Q=It$

We apply Ohm's Law

$U = R I$ $U=RI$

The power is

$P = U I$ $P=UI$

And the energy is

$E = U I t$ $E=UIt$

$E = U Q$ $E=UQ$

and

$DeltaE=QDeltaU$

The voltage is

$DeltaU=(DeltaE)/Q=(45-27)/6=18/6=3V$

A charge of 6 C6C6 C is passing through points A and B on a circuit. If the charge's electric potential changes from 45 J45J45 J to 27 J27J27 J, what is the voltage between points A and B?