Questions
As shown in the figure, a magnet is moved with fast speed towards a coil at rest. Due to this induced electromotive force, induced current and induced charge in the coil is E, I and Q, respectively. If the speed of the magnet is doubled, then find the incorrect option from the following.
detailed solution
Correct option is D
Induced charge doesn't depend upon the speed of magnet.dQ=idt=εRdt=dϕRTalk to our academic expert!
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A circular ring, made of copper wire, has area of 30 cm2 and resistance of 10 . It is placed in a uniform magnetic field of induction 2 tesla with its plane perpendicular to the field. When the loop is rotated through an angle of about its diameter, coulomb of charge flows through it. Then is
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