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What happens to the magnetic field inside a solenoid when the current is increas

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Question: What happens to the magnetic field inside a solenoid when the current is increased? (2020)

Options:

  1. It decreases
  2. It remains constant
  3. It increases
  4. It becomes zero

Correct Answer: It increases

Exam Year: 2020

Solution: 

The magnetic field inside a solenoid is directly proportional to the current. Therefore, if the current is increased, the magnetic field also increases.

What happens to the magnetic field inside a solenoid when the current is increas

Practice Questions

Q1
What happens to the magnetic field inside a solenoid when the current is increased? (2020)
  1. It decreases
  2. It remains constant
  3. It increases
  4. It becomes zero

Questions & Step-by-Step Solutions

What happens to the magnetic field inside a solenoid when the current is increased? (2020)
  • Step 1: Understand what a solenoid is. A solenoid is a coil of wire that creates a magnetic field when electricity flows through it.
  • Step 2: Know that the magnetic field is the area around the solenoid where magnetic forces can be felt.
  • Step 3: Learn that the strength of the magnetic field inside the solenoid depends on the amount of electric current flowing through the wire.
  • Step 4: Remember that 'directly proportional' means that if one thing increases, the other thing also increases.
  • Step 5: Conclude that if you increase the current flowing through the solenoid, the magnetic field inside it will also increase.
  • Magnetic Field in a Solenoid – The relationship between current and magnetic field strength in a solenoid, where the magnetic field is directly proportional to the current flowing through it.
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