Consider the problem,
1. Both wires A and B are of the same length.
2. Both wires are made up with same materials
3. The thickness of wire A is more than wire B
Thus, Wire A1 will show higher reading of current
In a series electrical cicuit comprising a resistor made up of metallic wire, the ammeter reads 100mA. If the length of the wire is doubled, how will the current in the circuit change? Justify your answer.
(a) How does the resistance of a wire depend on its radius? Explain your answer. (b) Two copper wires are of same length, but one is thicker than the other. Which will have more resistance?