passwella.
Menu

JAMB Physics 1991 Question 35

Question 35

Current Electricity

The internal resistance of each of the cells E1 and E2 shown in the figure above is 2 Ω. Calculate the total current in the circuit.

Diagram for this question
  1. A.0.80 A
  2. B.0.50 A
  3. C.0.40 A
  4. D.0.004 A
Show the answer and explanation

Answer: C (0.40 A)

Explanation

The two 2 V cells in parallel act as one 2 V cell of internal resistance 1 Ω. I = 2/(4 + 1) = 0.4 A.