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प्रश्न
Name two factors on which the strength of magnetic field of an electromagnet depends and state how does it depend on the factors stated by you.
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उत्तर १
The strength of the magnetic field of an electromagnet depends on:
- Number of turns: The strength of the magnet increases with the number of turns of the winding in the solenoid.
- Current: The strength of the magnetic field increases with increasing current through the solenoid.
उत्तर २
Factors on which the strength of the magnetic field of an electromagnet depends are:
- The number of turns in the solenoid. If the number of turns in the solenoid increases or decreases, the magnetic intensity also increases or decreases.
- It is directly proportional to the strength of the current that flows in the turns of the solenoid.
- It is found to increase further if a soft iron piece, called core, is placed along the axis of the solenoid inside it.
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संबंधित प्रश्न
The diagram shows a coil wound around a U shape soft iron bar AB.
1) What is the polarity induced at the ends A and B when the switch is pressed?
2) Suggest one way to strengthen the magnetic field in the electromagnet
3) What will be the polarities at A & B if the direction of current is reversed in the circuit?
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Fill in the blanks by writing (i) Only soft iron, (ii) Only steel, (iii) Both soft-iron and steel for the material of core and/or magnet.
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On reserving the direction of current in a wire, the magnetic field produced by it gets _____.
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A straight current-carrying conductor is kept in a magnetic field. It Experiences a force. State three factors on which the magnitude of force Experienced by the conductor depends. Under what condition will the conductor Experience no force?
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State the factors, on which depends the magnitude of the force acting on current carrying conductor, when it is kept in a magnetic field perpendicular to it.
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Write the answer in your word.
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