
According to Right-hand thumb rule, the thumb indicates the direction of

Important Questions on Magnetic Effects of Electric Current
A bar magnet is used to pick up an iron nail
At which part P, Q, and R is the easiest for the magnet to pick up the iron nail?


A constant current I flows in a horizontal wire in the plane of the paper from West to East as shown in the figure. The direction of magnetic field at a point will be South to North

Which of the following is NOT correct for magnetic filed lines?

Observe the diagram.
The magnetic poles represented by P and Q respectively are

The diagram shows a current carrying wire passing through the centre of a square card board. The magnetic field at points , and is:






Observe the following diagram and choose the correct alternative.




The figure shows the magnetic field lines of a magnetic field. There are three points , and in this field. Choose the correct option regarding field strength.



In figure, magnetic field between two magnets is shown. Which magnetic poles are present at point A and point B respectively of magnets?


