Draw magnetic field lines produced around a current carrying straight conductor passing through a cardboard. Name, state and apply the rule to mark the direction of these field lines.
Important Questions on Effects of electric current
Describe the magnetic field produced by a solenoid carrying current.
What is a solenoid? Can you determine the North and South poles of a current-carrying solenoid with the help of a bar magnet? Explain.
Draw the pattern of magnetic field lines produced around a current-carrying straight conductor held vertically on a horizontal cardboard. Indicate the direction of the field lines as well as the direction of current flowing through the conductor.
Kunal draws magnetic field lines close to the axis of a current carrying circular loop. As he moves away, towards the centre of the circular loop, he observes that the lines keep on diverging. How will you explain his observation?
Observe the given figure of Fleming' s Right Hand Rule and write the labels of A and B correctly.
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.
Electricity and magnetism are linked to each other.
Why does a current carrying solenoid when suspended freely rest along a north-south direction?
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.
