Question

A 12 W resistor is connected in series with a cell of emf 1.5 V and negligible internal resistance (or terminal voltage 1.5 V). How must a 4 W resistor be introduced in the circuit, so that the current drawn from the cell is 0.5 A?

• A. 4Ω must be connected in parallel to 12Ω
• B. 4Ω must be connected in series to 12Ω
• C. 4Ω must be connected in parallel to the battery
• D. 4Ω must be connected in series to the battery

Answer 1

The correct option is A

4Ω must be connected in parallel to 12Ω