Electromagnetic Induction
Trending Questions
Why does a compass needle get deflected when brought near a bar magnet?
A metallic ring connected to a rod oscillates freely like a pendulum. If now a magnetic field is applied in the horizontal direction so that the pendulum now swings through the field, the pendulum will
keep oscillating with old time period
keep oscillating with smaller time period
keep oscillating with larger time period
come to rest rapidly
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is
(i) pushed into the coil,
(ii) withdrawn from inside the coil,
(iii) held stationary inside the coil?
What is the frequency of AC current in India?
State Faradays law of electromagnetic induction.
- 0.001 A
- 0.2 A
- 0.25 A
- 0.5 A
What is alternating current?
- The needle in the compass gets deflected.
- The needle in the compass gets charged.
- The needle in the compass becomes hot.
- The needle in the compass glows brightly.
A cylindrical bar magnet is kept along the axis of a circular coil. If the magnet is rotated about its axis, then :
No current will be induced in the coil
Only emf will be induced in the coil
A current will be induced in the coil
Emf and current both will be induced in the coil
- Straight
- Parabolic
- Circular
- Elliptical
- 0.001 A
- 0.2 A
- 0.25 A
- 0.5 A
- Maxwell's corkscrew rule
- right hand thumb rule
- clock face rule
- Fleming's left-hand rule
What is the voltage of electricity that is supplied to a house in India?
