JAMB Physics 1987 Question 39

Question 39

Current Electricity

In Fig. 4 above, a voltage V is applied across the terminals P and Q. The voltage across the 1 Ω resistor is

Diagram for this question
  1. A.V/8
  2. B.V/4
  3. C.V/3
  4. D.V/2
Show the answer and explanation

Answer: C (V/3)

Explanation

The two 4 Ω in parallel give 2 Ω, so the total is 3 Ω. The 1 Ω resistor takes 1/3 of the voltage: V/3.