Question

Figure A and B, show a bulb connected to a cell in two different ways.

1. What will be the direction of the current through the bulb in both the cases. (Q to P or P to Q)
2. Will the bulb glow in both the cases?
3. Does the brightness of the glowing bulb depend on the direction of current through it?

Answer 1

1. Current always flows from a battery’s positive terminal to its negative terminal throughout the circuit. In the example of current flow from Q to P, current will flow from the positive terminal Q to the negative terminal P. Whereas, in the case of P to Q; current will flow from the negative terminal P to the positive terminal Q.
2. Because the current is flowing in both circumstances, the bulb will light up.
3. Whether the bulb glows brighter or duller depends on the circuit’s quantity of current and voltage. The direction of the current flow has no impact on it.