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The magnetic field of a solenoid can be ...

The magnetic field of a solenoid can be increased by

A

adding more loops' per metre

B

increasing the current

C

putting an iron core inside the coil . to make an electromagnet

D

all of the above

Text Solution

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To solve the question regarding how to increase the magnetic field of a solenoid, we will analyze the methods mentioned in the video transcript step by step. ### Step-by-Step Solution: 1. **Understanding the Solenoid**: A solenoid is a coil of wire that generates a magnetic field when an electric current passes through it. The strength of this magnetic field can be influenced by several factors. 2. **Using an Iron Core**: - One effective way to increase the magnetic field strength of a solenoid is by inserting an iron core into the coil. ...
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State two ways by which the magnetic field of a solenoid can be made stronger

A current flowing in the winding of a long straight solenoid is increased at a sufficiently slow rate. Demonstrate that the rate at which the enrgy of the magnetic field in the solenoid increases is equal to the flux of the Poynting vector across the lateral surface of the solenoid.

Knowledge Check

  • The magnetic field inside a solenoid is

    A
    directly prportional to its length
    B
    inversely prportional to the total numbers of turn
    C
    inversely proportional to the current
    D
    directly proportional to the current

  • The magnetic field of a solenoid carrying a current is similar to that of a

    A
    bar magnet
    B
    resistor
    C
    electric motor
    D
    iron core

  • The magnetic field inside a solenoid is-

    A
    infinte
    B
    zero
    C
    uniform
    D
    non-uniform

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    Question based on Magnetic field of a solenoid | Magnetic field lines | Magnetic flux and Gauss law for magnetism

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    The magnitude of the magnetic field inside a long solenoid is increased by

    Magnetic field inside a solenoid is

    Assertion: Intensity of magnetic field due to a solenoid near its ends is only half of its magnitude inside the solenoid. Reason: If solenoid is made very long then magnetic field inside the solenoid becomes uniform.

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