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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.
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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?
What is an electromagnet?
Name the material used for making the armature of an electric bell. Give a reason for your answer.
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.
Electric bell ______.
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?
State the energy change that takes’place in 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 and the coil is minimum.
State and explain Maxwell’s Cork Screw Rule.
Which magnet will you use?
Iron is to be separated from trash.
