Question

In which of the following circuits will the bulb or the bulbs glow the brightest?

• A. A simple circuit with one bulb(A) and one cell(B)
• B. A simple circuit with one bulb(A) and two cells(B, B).
• C. A simple circuit with two bulbs(A, A) and one cell(B).
• D. A simple circuit with two bulbs(A, A) and two cells(B, B).

Answer 1

The correct option is B

A simple circuit with one bulb(A) and two cells(B, B).

Internally, a cell converts stored chemical energy into electrical energy, allowing a current to flow from the positive terminal round to the negative one via an external circuit. The chemical energy stored in two cells is more than that in one. So, the bulb in the circuit that has one bulb and two cells will glow the brightest.