EASY
10th CBSE
IMPORTANT
Earn 100
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? Support your answer with a reason.
Important Questions on Magnetic Effects of Electric Current
MEDIUM
10th CBSE
IMPORTANT
It is established that an electric current through a metallic conductor produces a magnetic field around it. Is there a similar magnetic field produced around a thin beam of moving (i) alpha particles (ii) neutrons? Justify your answer.
MEDIUM
10th CBSE
IMPORTANT
What does the direction of thumb indicate in the right hand thumb rule. In what way this rule is different from Fleming's left hand rule?
EASY
10th CBSE
IMPORTANT
Meena draws magnetic field lines of field close to the axis of a current-carrying circular loop. As she moves away from the centre of the circular loop she observes that the line keep on diverging. How will you explain her observation?
EASY
10th CBSE
IMPORTANT
What does the divergence of magnetic field lines near the ends of a current-carrying straight solenoid indicate?
EASY
10th CBSE
IMPORTANT
Name four appliances wherein an electric motor, a rotating device that converts electrical energy to mechanical energy, is used as an important component. In what respect motors are different from generators?
EASY
10th CBSE
IMPORTANT
What is the role of the two conducting stationary brushes in a simple electric motor?
MEDIUM
10th CBSE
IMPORTANT
What is the difference between a direct current and an alternating current? How many times does AC used in India change direction in one second?
EASY
10th CBSE
IMPORTANT
What is the role of fuse, used in series with any electrical appliance? Why should a fuse with defined rating not be replaced by one with a large rating?
