engineering recuitment ICAR Technician 2021 Mock Test (Re-Exam) Physics Current, Resistance and Electricity Power in Electric Circuits
Two metallic wires A and B of the same material have radius r1 and 2r1 and its length are l1 and 2l1 respectively. The same current is flowing through wires A and B causing power dissipation P1 and P2. Which one of the following is the correct relationship between P1 and P2?
1
P2 = 2P1
2
P2 = P1
3
P2 = P1/2
4
P2 = 4P1