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JAMB Physics 2011 Question 34

Question 34

Current Electricity

In the circuit above, three resistors, 2Ω, 4Ω and 12Ω are connected in parallel and a 12 V battery is connected across the combination. The current flowing through the 12Ω resistor is

Diagram for this question
  1. A.3.2 A
  2. B.9.6 A
  3. C.14.4 A
  4. D.1.0 A.
Show the answer and explanation

Answer: D (1.0 A.)

Explanation

Each resistor in parallel has the full 12 V across it, so the current in the 12 Ω resistor is 12 ÷ 12 = 1.0 A.