EASY
10th CBSE
IMPORTANT
Earn 100
Explain the function of the following parts of an electric motor.
Split ring
Important Questions on Magnetic Effects of Electric Current
EASY
10th CBSE
IMPORTANT
State Fleming's left hand rule.
HARD
10th CBSE
IMPORTANT
Draw the pattern of magnetic field lines produced around a current carrying straight conductor passing perpendicularly through a horizontal cardboard. State and apply right-hand thumb rule to mark the direction of the field lines. How will the strength of the magnetic field change when the point where magnetic field is to be determined is moved away from the straight conductor? Give reason to justify your answer.
EASY
10th CBSE
IMPORTANT
What is an electromagnet? List any two uses of it.
EASY
10th CBSE
IMPORTANT
The change in magnetic field lines in a coil is the cause of induced electric current in it. Name the underlying phenomenon.
EASY
10th CBSE
IMPORTANT
Draw a labelled diagram to show how an electromagnet is made.
EASY
10th CBSE
IMPORTANT
State the purpose of soft iron core used in making an electromagnet.
EASY
10th CBSE
IMPORTANT
List two ways of increasing the strength of an electromagnet if the material of the electromagnet is fixed.
MEDIUM
10th CBSE
IMPORTANT
Name the poles P,Q,R and S of the magnets in the following figures 'a' and 'b'.
