A 24 V battery is connected to a 6 ohm resistor and a 6 ohm resistor in series. What current flows through the circuit?

Answer and explanation

Correct answer: A. 2 A

  1. Step 1: Resistors in series add: R = 6 + 6 = 12 ohms. Step 2. I = V / R = 24 / 12 = 2 A. Answer: 2 A. Why not the others: 4 A: this uses only the 6 ohm resistor. 288 A: this multiplies voltage by resistance. 8 A: this uses the parallel resistance.

Practise more Physics.

Free questions with an explanation for every one, and full timed MCAT (Medical College Admission Test) mock tests.