Three 2 V cells are connected in series and used as a battery in a circuit.
(a) What is the p.d. at the terminals of the battery ?
(b) How many joules of electrical energy does 1 C gain on passing through (i)
one cell (ii) all three cells ?
Answers
Explanation:
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.
(i) Given: p.d. = 2V, Charge moved = 1C
We know that, p.d. = work done/charge moved
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 x 1
Work done = 6 joule
Answer:
(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.