A wire has a resistance of 2 ohm. If it is cut into two equal parts and connected in parallel, what is the equivalent resistance?
Q1. A wire has a resistance of 2 ohm. If it is cut into two equal parts and connected in parallel, what is the equivalent resistance?
Answer: 0.5 ohm
Explanation: Each half has a resistance of 1 ohm. When connected in parallel, 1/R_eq = 1/1 + 1/1 = 2, so R_eq = 0.5 ohm. Option B is incorrect because it doesn't correctly apply the parallel resistance formula.