A uniform cylindrically symmetric magnetic field varies as B=kt along the cylinder axis. An electron is released from rest at distance r from the axis. Its acceleration just after release is:
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A uniform cylindrically symmetric magnetic field varies as B=kt along the cylinder axis. An electron is released from rest at distance r from the axis. Its acceleration just after release is:

G1 Physics · Accepted Answer

Magnetic flux is Φ=∫B⃗·dA⃗ and induced emf is ε=−dΦ/dt. Apply Lenz’s law for direction and I=ε/R when the circuit is resistive. This gives Image 1.