A 10 cm perfectly conducting wire PQ moves at 1 cm/s on horizontal zero-resistance rails. The rails are connected to L=1 mH and R=1 Ω, and the plane is in a uniform perpendicular magnetic field B=1 T. The key is closed at an instant. After 1 ms, the current is x×10⁻³ A. Find x. Assume the wire speed remains constant and e⁻¹=0.37.
Physics · Electromagnetic Induction
A 10 cm perfectly conducting wire PQ moves at 1 cm/s on horizontal zero-resistance rails. The rails are connected to L=1 mH and R=1 Ω, and the plane is in a uniform perpendicular magnetic field B=1 T. The key is closed at an instant. After 1 ms, the current is x×10⁻³ A. Find x. Assume the wire speed remains constant and e⁻¹=0.37.
