Home
Class 12
PHYSICS
The north pole of a bar magnet is raidly...

The north pole of a bar magnet is raidly introduced into a solenoid at one end (say A). Which of the following statements correctly depicts the phenomenon taking place?

A

No induced emf is developed.

B

The end A of the solenoid behaves like a south pole.

C

The end A of the solenoid behaves like north pole.

D

The end A of the solenoid acquires positive potential.

Text Solution

Verified by Experts

The correct Answer is:
C
It happens in accrodance with the Lenz's law. The end A becomes north pole, to oppose the motion of the magnet.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    NCERT FINGERTIPS|Exercise MCQs|2 Videos

  • ELECTROMAGNETIC INDUCTION

    NCERT FINGERTIPS|Exercise Motional Electromotive Force|15 Videos

  • ELECTROMAGNETIC INDUCTION

    NCERT FINGERTIPS|Exercise Faraday'S Law Of Induction|16 Videos

  • ELECTRIC CHARGES AND FIELDS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • ELECTROMAGNETIC WAVES

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

Which of the following figures depicts the position of pole star correctly?

Consider the following statements : 1. The magnetic pole in the northern hemisphere is the north magnetic pole. 2. At all points on a magnet, an iron bar gets attracted. Which one of the following statements given above is/are correct ?

A solenoid is a long helical coil of wire through which a current is runs in order to create a magnetic field. The magnetic field of the solenoid is the superposition of the fields due to the current through each coil. It is nearly uniform inside the solenoid and close to zero outside and is similar to the field of a bar magnet having a north pole at one end and a south pole at the other depending upon the direction of current flow. The magnetic field produced in the solenoid is dependent on a few factors such as, the current in the coil, number of turns per unit length etc. The following graph is obtained by a researcher while doing an experiment to see the variation of the magnetic field with respect to the current in the solenoid. The unit of magnetic field as given in the graph attached is in milli-Tesla (mT) and the current is given in Ampere. Which of the following statement is correct if a soft iron bar is placed inside the solenoid?

The north pole of a long bar magnet was pushed slowly into a short solenoid connected to a galvanmeter. The magnet was held stationary for a few seconds with the north pole in the middle of the solenoid and then withdrawn repidly. The maximum deflection of the galvanometer was observed when the magnet was