Advertisements
Advertisements
प्रश्न
A circuit contains a battery, a variable resistor and a solenoid. The figure below shows the magnetic field pattern produced by the current in the solenoid.
- State how the magnetic field pattern indicates regions where the magnetic field is stronger.
- What happens to the magnetic field when the current in the circuit is reversed?
उत्तर
- Relative closeness of field lines indicates the strength of magnetic field. Since field lines are crowded around the ends of the solenoid, hence these are the regions of strongest magnetism.
- The direction of the field will also be reversed.
APPEARS IN
संबंधित प्रश्न
State the direction in which current-carrying freely suspended solenoid rests
A current carrying solenoid behaves like a ______.
What is a solenoid?
Draw magnetic field lines in and around a current-carrying straight solenoid.
What is a solenoid? Why do we usually keep its diameter small in comparison to its length?
The pattern of the magnetic field produced by the straight current-carrying conducting wire is ____________.
The diagram below shows a magnet moved near a coil along its axis. Which of the diagram shows correct flow of current during this motion?
The diagram below shows an insulated copper wire wound around a hollow cardboard cylindrical tube. Answer the questions that follow:
- What are the magnetic poles at A and B when the key K is closed?
- State two ways to increase the strength of the magnetic field in this coil without changing the coil.
- If we place a soft iron bar at the centre of the hollow cardboard and replace the DC source with an AC source then will it attract small iron pins toward itself when the current is flowing through the coil?
Differentiate between a circular coil and a solenoid.
Draw a neat diagram of a solenoid and name its various components.
