A circular coil of radius 10 cm, 500 turns and resistance 2 Ω is placed with its plane perpendicular to the horizontal component of the earth's magnetic field. It is rotated about its vertical diameter through 180° in 0.25 s. Estimate the magnitudes of the emf and current induced in the coil. Horizontal component of the earth's magnetic field at the place is 3.0 × 10–5 T.

Question

TextInduced EMF and Induced Current

Similar Questions

A square shaped coil of side 10 cm, having 100 turns is placed perpendicular to a magnetic field which is increasing at 1 T/s. The induced emf in the coil is

MCQ (Single)Faraday's Laws of Electromagnetic InductionInduced EMF and Induced Current

Consider the experimental set up shown in the figure. This jumping ring experiment is an outstanding demonstration of some simple laws of Physics. A conducting non-magnetic ring is placed over the vertical core of a solenoid. When current is passed through the solenoid, the ring is thrown off. Answer the following questions : (i) Explain the reason of jumping of the ring when the switch is closed in the circuit. (ii) What will happen if the terminals of the battery are reversed and the switch is closed ? Explain. (iii) Explain the two laws that help us understand this phenomenon.

TextFaraday's Laws of Electromagnetic InductionInduced EMF and Induced CurrentLenz's Law for Direction of Induced Current