Question 40
Current ElectricityIn Fig. 9, the value of R is
- A.3 Ω
- B.4 Ω
- C.5 Ω
- D.6 Ω
Show the answer and explanation
Answer: D (6 Ω)
Explanation
Total resistance = 12/2 = 6 Ω. So R in parallel with 6 Ω must be 3 Ω, which needs R = 6 Ω.
JAMB Physics 1986 Question 40