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प्रश्न
The diagram shows a current-carrying coil passing through a cardboard sheet. Draw three magnetic lines of force on the board.
State two factors on which magnitude of magnetic field at the centre depends.
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उत्तर
Figure shows the magnetic lines of force due to current-carrying coil.
The magnitude of the magnetic field at the center of coil depends on:
(i) the strength of the current in the coil, and
(ii) the radius of coil.
संबंधित प्रश्न
The figure shows a solenoid wound on a core of soft iron. Will the end A be a N pole or S pole when the current flows in the direction shown?
Why does a current carrying freely suspended solenoid rest along a particular direction? State the direction in which it rests.
What effect will there be on a magnetic compass when it is brought near a current carrying solenoid?
A current carrying solenoid behaves like a ______.
Draw the pattern of magnetic field lines of a solenoid through which a steady current flows. What does the pattern of field lines inside the solenoid indicate?
Derive the expression for the heat produced due to a current ‘I’ flowing for a time interval ‘t’ through a resistor ‘R’ having a potential difference ‘V’ across its ends. With which name is the relation known? How much heat will an instrument of 12W produce in one minute if it is connected to a battery of 12V?
What is a solenoid? Why do we usually keep its diameter small in comparison to its length?
Which of the following diagrams correctly shows the magnetic field produced by a current-carrying wire?
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?
What does the divergence of magnetic field lines near the ends of a current carrying straight solenoid indicate?
