Why does a compass needle get deflected when brought near a bar magnet ?
Why don't two magnetic field lines intersect each other ?
Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right hand rule to find out the direction, of magnetic field inside and outside the loop.
The magnetic field in a given region is uniform. Draw a diagram to represent it
In the given figure how do you think the displacement of rod AB will be affected if (i) current in the rod AB is increased, (ii) a stronger horse-shoe magnet is used ; and (iii) length of the rod AB is increased ?
Name two safety measures commonly used in electric circuits and appliances.
An electric oven of a 2 kW power rating is operated in a domestic circuit (220 V) that has a current rating of 5 A. What result do you expect ? Explain.
What precaution should be taken to avoid the overloading of domestic electric circuits ?
List three sources of magnetic fields.
How does a solenoid behave like a magnet ? Can you determine the north and south poles of a current carrying solenoid with a help of bar magnet ? Explain.
