A square loop of side L=0.2 m and resistance R=80 mΩ moves at V=10 m/s along +x in a magnetic field into the page with magnitude B=αx, where α=0.2 T m⁻¹. If the induced current magnitude is I ampere, find 10I. Neglect self-inductance.

Question

G1 Physics · Accepted Answer

Use εₗ=-L(dI/dt), U=½LI², and for mutual induction ε₂=-M(dI₁/dt). Applying the stated geometry/circuit condition gives 10.