1. increased n times that of the original
2. decreased to 1/ n times that of the original
3. decreased to 1/n2 times that of the original
4. increased to n2 times that of the original
Answer: 3. decreased to 1/n2 times that of the original
Explanation:
If we want to transmit the same number of watts, the current will be when the voltage is increased by n.
For the same amount of loss, the new diameter of the wire will be 1/n.
The amount of copper will be 1/n2.
So, when voltage is increased by n times then for same efficiency size of the conductor is reduced to that of the original.
