Questions
N turns are tightly wound to form a spiral plane of outer radius a. If the magnetic induction varies perpendicular to the plane of spiral,then the the emf induced in the spiral coil is
detailed solution
Correct option is D
Let the hypothetical elementary loop have radius x. Then emf induced in this loop dε=AdBdt=πx2B0cosωt dN=πx2B0ωcosωt(Na)dx or ε=∫0aB0πωNacosωtx2dx=πa2B0ωNcosωt3Talk to our academic expert!
Similar Questions
A square wire loop, of side a has a long straight wire carrying a constant current i that passes through the centre of the loop and perpendicular to its plane as shown in Fig.
The current induced in the square loop is
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