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प्रश्न
How does a magnetic field set up by a solenoid change when a soft iron core is inserted inside solenoid?
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उत्तर
By placing a soft iron core inside the solenoid, the magnetic field becomes more intense.
संबंधित 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.
State two differences between an electromagnet and a permanent magnet.
Name the material used for making the armature of an electric bell. Give a reason for your answer.
What is an electric motor?
How does a magnetic field set up by a solenoid change when strength of current in the solenoid is decreased?
Why is soft iron generally used as the core of the electromagnet?
What will be the effect on the working of an electric bell if instead of a direct current an alternating current is used?
What energy conversion takes place during the working of a d c motor?
State the position of armature coil relative to the direction of magnetic field, in a D. C. motor when the deflecting couple acting an the coil is maximum.
State the function of a split ring in D.C. motor.
