Question

In the circuit diagram shown, the two resistance wires A and B are of same length and same material, but A is thicker than B. Which ammeter A1 or A2 will indicate higher reading for current ? Give reason

Answer 1

In the diagram the given points are: -

1. Wire A and wire B are the same length.

2. The material of both wires is same.

3. Wire A is thicker than the wire B.

So therefore, it concludes from all, the information that the thicker wire of the ammeter A1 will show the reading of current more.

Answer 2

Ammeter A2 shows higher reading. Since wire A1 is longer, it has greater resistance and so draws lesser current. So more current flows through B and A2 shows higher reading.