In the circuit in Fig. `7.27`, bulb `B` does not glow although ammeter `A` indicates that the current is flowing . Why does the bulb not glow?

Options

A. The bulb is fused .
B. tThere is a break in the circuit between bulb and ammeter.
C. The variable resistor has too large resistance.
D. There is a break in the circuit between the bulb and the variable resistance.

Answer

C

Explanation

It is a case of weak current.