Question

A source of potential difference V volt sends
current I ampere in a circuit for time t second.
Write expressions for
(a) electrical energy
supplied by the source, and
(b) electrical power spent by the source.​​

Answer 1

Answer:

Potential difference V is the work done in moving a unit charge

∴ Work done in moving a charge Q through pot.diff. V=QV

i.e. W=QV

but= Q/t=i or Q=It

∴W=VIt

Worke done=Electrical energy

(a) ∴ Electrical energy = VIt is the expression

(b) Power is the rate of doing W

P = VI is the expression.

Explanation:

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Answer 2

Answer:

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