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ANS: On moving a rectangular conducting loop into the field, the flux increases. According to
Lenz’s law, the induced current would be anticlockwise.
7. Two bar magnets are quickly moved towards a metallic loop connected across a capacitor C as
shown in the figure. Predict the polarity of the capacitor. [AI 2017, 2011]

ANS: The upper plate is having +ve polarity and the lower plate is having -ve polarity.
8. A circular loop is moved through the region of uniform magnetic field. Find the direction of
induced current (clock wise or antic lock wise) when the loop moves (i) into the e field, and (ii)
out of the field. [Foreign 2010]

ANS: (i) Anticlockwise, (ii) Clockwise
9. A rectangular loop of wire is p right, away from the long straight wire through which a steady
current I flows upwards. What is the direction of induced current in the loop?

ANS: Clockwise.
10. The current i in an induction coil varies with time t according to the adjoining graph.

Draw the graph of induced emf with time.

ANS: Induced emf, E = -L dI/dt