A potential divider is made from a supply (negligible internal resistance), a resistor and a resistor in series. A load is connected across the resistor. What is the p.d. across the load, in volts?

Answer and explanation

Correct answer: B. 3.27

  1. Step 1: Calculate the equivalent parallel resistance of the resistor and the load: .
  2. Step 2: The total circuit resistance combining in series with the resistor is .
  3. Step 3: Apply the potential divider formula across the parallel load combination: .
Answer
3.27.

Practise more Current electricity.

Free questions with an explanation for every one, and full timed Cambridge A-Level mock tests.