Question 2 :
A magnetic compass shows a deflection when placed near a current carrying wire. How will the deflection of the compass get affected if the current in the wire is increased ?

Question 3 :
The essential difference between an AC generator and a DC generator is that

Question 5 :
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is withdrawn from inside the coil?

Question 7 :
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 outside the loop.

Question 8 :
State TRUE or FALSE. A wire with a green insulation is usually the live wire of an electric supply

Question 9 :
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is held stationary inside coil?

Question 10 :
How many times does AC used in India change direction in one second ?

Question 13 :
An electric oven of 2 kW power rating is operated in a domestic electric circuit (220V) that has a current rating of 5 A. Will the fuse blow off?

Question 17 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cf5273b230584979b75.png' /> In the above figure, a constant current flows in a horizontal wire in the plane of the paper from east to west. The direction of magnetic field at a point will be North to South

Question 19 :
State TRUE or FALSE. An electric motor converts mechanical energy into electrical energy.

Question 20 :
For a current in a long straight solenoid N- and S-poles are created at the two ends. Among the following statements, the incorrect statement is