The diagram alongside shows three resistances of 1 Ω, 3 Ω and 4 Ω connected to a cell of e.m.f. 2 V and internal resistance 2.0 Ω.

Question

The diagram alongside shows three resistances of 1 Ω, 3 Ω and 4 Ω connected to a cell of e.m.f. (electromotive force) 2 V and internal resistance 2.0 Ω.

a. Calculate the total resistance of the circuit.

b. What reading will be shown by the ammeter?

c. What reading will be shown by the ammeter if a similar cell is connected in series with the given cell?

Answer 1

(a) 2 ohm

(b) 1 A

(c) 0.5 A