Correct option: (1) 0.180 mV
Explanation:
The B field strength of a solenoid is B 0 = μ in , where n = 1500 / 0.25 = 6000. The emf in the loop can then be determined from E = AμonΔi /Δt. where A = 0.03 × 0.04 = 0.0012,Δi = 4 and Δt = 0.2 Solving for the emf yields E = 0.18 mV.