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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?
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उत्तर
End A of the solenoid will be S pole because the direction of flow of current at this end is clockwise.
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संबंधित प्रश्न
The adjacent diagram shows a small magnet placed near a solenoid AB. Current is switched on in the solenoid by pressing the key K.
- State the polarity at the ends A and B.
- Will the magnet be attracted or repelled? Give a reason for your answer.
State two ways by which the magnetic field due to a current carrying solenoid can be made stronger.
A current carrying solenoid behaves like a ______.
A current carrying solenoid when freely suspended, it always rests in ______ direction.
- What name is given to a cylindrical coil of diameter less than its length?
- If a piece of soft iron is placed inside the coil mentioned in part (a) and current is passed in the coil from a battery, what name is then given to the device so obtained?
- Give one use of the device mentioned in part (b).
What is a solenoid?
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?
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 factors on which one magnetic field strength is produced by current-carrying solenoids depends are
For a current in a long straight solenoid, N-pole and S-pole are created at the two ends. Among the following statements, the incorrect statement 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?
Under what conditions permanent electromagnet is obtained if a current carrying solenoid is used? Support your answer with the help of a labelled circuit diagram.
Ansari Sir was demonstrating an experiment in his class with the setup as shown in the figure below.
A magnet is attached to a spring. The magnet can go in and out of the stationary coil. He lifted the Magnet and released it to make it oscillate through the coil.
Based on your understanding of the phenomenon, answer the following question.
Is there any difference in the observations in the galvanometer when the Magnet swings in and then out of the stationary coil? Justify your answer.
Observe the given figure of a current-carrying solenoid and write the labels of A and B correctly.
How is a solenoid prepared?
Draw a neat diagram of a solenoid and name its various components.
