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Three 2V cells are connected in series and used as a battery in a circuit.
a) what is p.d. at the terminals of the battery?
b) how many joules of electrical energy does 1C gain on passing through I) one cell ii) three cells
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Explanation:
(a) If three cells of 2 volt each are connected in series to make a battery, then the total potential difference between terminals of the battery will be 6V.
(b) (i) Given: p.d. = 2V, Charge moved = 1C
We know that
Work done = p.d. x charge moved = 2 x 1
Work done = 2 joules
(ii) Given: p.d. = 6V,
Charge moved = 1C
Work done = p.d. x charge moved = 6 x1
Work done = 6 joule.
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