136
Question
If a piece of soft iron is placed inside the coil n number of turns and current is passed in the coil from a battery, what name is then given to the device so obtained ?
If a piece of soft iron is placed inside the coil n number of turns and current is passed in the coil from a battery, what name is then given to the device so obtained ?
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Solution
The correct option is C electromagnet
A solenoid is a long coil containing a large number of close turns of insulated copper wire wound on a conducting or non-conducting material. In this case, we consider a coil wound on a soft iron bar called the core.When the circuit is closed by pressing the key, a steady current flow through such a device, the magnetic fields produced by the solenoid are similar to the magnetic field produced by a magnet and hence it is called as an Electromagnet.
The strength of an electromagnet is related to factors stated below:
- Directly proportional to the number of turns in the coil.
- Directly proportional to the current flowing in the coil.
- Inversely proportional to the length of air gap between the poles.
A solenoid is a long coil containing a large number of close turns of insulated copper wire wound on a conducting or non-conducting material. In this case, we consider a coil wound on a soft iron bar called the core.When the circuit is closed by pressing the key, a steady current flow through such a device, the magnetic fields produced by the solenoid are similar to the magnetic field produced by a magnet and hence it is called as an Electromagnet.
The strength of an electromagnet is related to factors stated below:
- Directly proportional to the number of turns in the coil.
- Directly proportional to the current flowing in the coil.
- Inversely proportional to the length of air gap between the poles.
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