Advertisements
Advertisements
Question
Predict the direction of induced current in the situation described by the following figure.
Advertisements
Solution
Lenz's law specifies the direction of the induced current in a closed loop. Using Lenz’s rule, the direction of the induced current in the given situation can be predicted as follows:
The induced current in the right coil drives X to Y.
The direction of the induced current is along the xryx.
RELATED QUESTIONS
Show that Lenz's law is a consequence of conservation of energy.
The battery discussed in the previous question is suddenly disconnected. Is a current induced in the other loop? If yes, when does it start and when does it end? Do the loops attract each other or repel?
A bar magnet is moved along the axis of a copper ring placed far away from the magnet. Looking from the side of the magnet, an anticlockwise current is found to be induced in the ring. Which of the following may be true?
(a) The south pole faces the ring and the magnet moves towards it.
(b) The north pole faces the ring and the magnet moves towards it.
(c) The south pole faces the ring and the magnet moves away from it.
(d) The north pole faces the ring and the magnet moves away from it.
Consider the situation shown in figure. If the closed loop is completely enclosed in the circuit containing the switch, the closed loop will show _______________ .
Which of the following statements is not correct?
Lenz's law gives ______
A long solenoid ‘S’ has ‘n’ turns per meter, with diameter ‘a’. At the centre of this coil we place a smaller coil of ‘N’ turns and diameter ‘b’ (where b < a). If the current in the solenoid increases linearly, with time, what is the induced emf appearing in the smaller coil. Plot graph showing nature of variation in emf, if current varies as a function of mt2 + C.
Predict the direction of induced current in the situation described by the following figure.
Predict the direction of induced current in the situation described by the following figure.
In the diagram given below, a strong bar magnet is moving towards solenoid-2 from solenoid-1. The direction of induced current in solenoid-1 and that in solenoid-2, respectively, are through the directions:
What happens whenever the magnetic flux through a closed circuit changes?
What do Faraday's laws and Lenz's law form together?
When the N-pole moves away from the coil, what happens to the flux and galvanometer?
When the N-pole moves away from the coil, which induced current direction and near-face pole are observed?
Suppose an induced current aided the flux change as an N-pole approached a coil. Which pole would form on the near face?
How does an induced field oppose a decrease in magnetic flux?
In what sense does Lenz's law behave like electromagnetic inertia?
What is the induced current path for an irregular loop moving out of an out-of-page magnetic field?
