HARD
10th CBSE
IMPORTANT
Earn 100
Explain, the principle, construction and working of DC generator.
Important Questions on Magnetic Effects Of Electric Current
MEDIUM
10th CBSE
IMPORTANT
Explain the meaning of the words ‘electromagnetic’ and ‘induction’ in the term electromagnetic induction. On what factors does the value of induced current produced in a circuit depend? Name and state the rule used for determination of direction of induced current. State one practical application of this phenomenon in everyday life.
MEDIUM
10th CBSE
IMPORTANT
Describe an activity to demonstrate the pattern of magnetic field lines around a straight conductor carrying current.
EASY
10th CBSE
IMPORTANT
State the rule to find the direction of magnetic field associated with a current carrying conductor.
EASY
10th CBSE
IMPORTANT
The force of repulsion between two parallel wires is when each one of them carries a certain current . If the current in each is doubled, the force between them would be:
MEDIUM
10th CBSE
IMPORTANT
The coil of a heater is cut into two equal halves and only one of them is used in the heater, the ratio of the heat produced by this half of the coil to that produced by the original coil is:
MEDIUM
10th CBSE
IMPORTANT
By inserting a soft iron piece into a solenoid, the strength of the magnetic field
EASY
10th CBSE
IMPORTANT
The intensity of a magnetic field is defined as the force experienced by a
MEDIUM
10th CBSE
IMPORTANT
A copper ring is moved towards the north pole of a bar magnet. Then
