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# Three 2 V Cells Are Connected in Series and Used as a Battery in a Circuit. How Many Joules of Electrical Energy Does 1 C Gain on Passing Through (I) One Cell (Ii) All Three Cells? - CBSE Class 10 - Science

#### Question

Three 2 V cells are connected in series and used as a battery in a circuit.

How many joules of electrical energy does 1 C gain on passing through (i) one cell (ii) all three cells?

#### Solution

(i) For one cell:
V = 2 V
Q = 1 C
And also:
Electrical energy gained = Work done
So using the relation, V = W/Q or W = V x Q
= 2 x 1 = 2 J
(ii) For three cells:
V = 6 V
Q = 1 C
So, W = V x Q = 6 x 1 = 6 J
So 2 joules and 6 joules of electrical energy is gained for the above two cases (i) one cell and (ii) all three cells, respectively.

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Solution Three 2 V Cells Are Connected in Series and Used as a Battery in a Circuit. How Many Joules of Electrical Energy Does 1 C Gain on Passing Through (I) One Cell (Ii) All Three Cells? Concept: Electric Current and Circuit.
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