Question

the length of the conducting wire of a circuit is doubled.the current in the circuit will. 1. increase to double 2. decrease to half of the previous reading 3. decrease to one third of previous reading 4. remain same

Answer 1

remain the same because it doesn't depend on the length

Answer 2

if wire posses some resistance then 2 is the right answer,but resistance is negligible than 4 is the right answer