Questions
A conducting ring of radius 1 meter is placed in an uniform magnetic field B of 0.01Telsa oscillating with frequency 100Hz with its plane at right angles to B. What will be the induced electric field
detailed solution
Correct option is B
In a constant magnetic field conducting ring oscillates with a frequency of 100 Hz.i.e. T=1100s, in time T4 flux links with coil changes from BA to zero. ⇒ Induced emf = change in fluxtime=BAT/4=4BAT=4B×πr2T=4×0.01×π×121/100=4πV Induced electric field along the circle, using Maxwell equation ∮E.dl=−dϕdt=AdBdt=e⇒E=12πr×πr2×dBdt=e2πr=4π2πr=2 V/mTalk 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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