
Ampere's swimming rule is used to find the direction of current.

Important Questions on Magnetism

The magnetic field around a current carrying conductor AB is given in the figure. Based on Maxwell's right-hand screw rule, find the direction of the current through the conductor.


Answer the following:
Name the rule used to find the direction of induced current in a conductor moving in a magnetic field.

In the figure which law is shown? Label and in relation to the law shown.



A uniform magnetic field pointing top to bottom in a plane of paper. When an electron is allowed to move perpendicular to it, it gets deflected outwards. The electron must be moving along:

According to Fleming's right hand rule. What does the direction of middle finger shows?

At the centre of which of the following four circular rings has maximum magnetic field while passing equal current through each one?


Write Fleming's right-hand rule.


What is Fleming's left-hand rule for the direction of force on a current carrying conductor?

An electron move with velocity v in a uniform magnetic field B. The magnetic force experienced by the electron is

The diagram below shows a magnetic needle kept just below the conductor AB which is kept in the North-South direction.
i) In which direction will the needle deflect when the key is closed?
ii) Why is the deflection produced?
iii) What will be the change in the deflection if the magnetic needle is taken just above the conductor AB?
iv) Name one device which works on this principle.




Name the law shown in the figure. Label and according to this law.


