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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

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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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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.