#### 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.

Is there an error in this question or solution?

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.