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A solenoid produces a magnetic field similar to that of a bar magnet. What is th

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Question: A solenoid produces a magnetic field similar to that of a bar magnet. What is the primary factor that determines the strength of the magnetic field in a solenoid? (2021)

Options:

  1. Length of the solenoid
  2. Number of turns per unit length
  3. Material of the solenoid
  4. Current flowing through the solenoid

Correct Answer: Number of turns per unit length

Exam Year: 2021

Solution: 

The strength of the magnetic field in a solenoid is primarily determined by the number of turns per unit length and the current flowing through it.

A solenoid produces a magnetic field similar to that of a bar magnet. What is th

Practice Questions

Q1
A solenoid produces a magnetic field similar to that of a bar magnet. What is the primary factor that determines the strength of the magnetic field in a solenoid? (2021)
  1. Length of the solenoid
  2. Number of turns per unit length
  3. Material of the solenoid
  4. Current flowing through the solenoid

Questions & Step-by-Step Solutions

A solenoid produces a magnetic field similar to that of a bar magnet. What is the primary factor that determines the strength of the magnetic field in a solenoid? (2021)
  • 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 strength is similar to that of a bar magnet, meaning it has a north and south pole.
  • Step 3: Identify the two main factors that affect the strength of the magnetic field in a solenoid: the number of turns of wire and the amount of electric current.
  • Step 4: Realize that more turns of wire (loops) in the solenoid means a stronger magnetic field because the magnetic effects add up.
  • Step 5: Understand that a higher electric current flowing through the wire also increases the strength of the magnetic field.
  • Step 6: Conclude that both the number of turns per unit length and the current are crucial for determining the strength of the magnetic field in a solenoid.
  • Magnetic Field in Solenoids – The strength of the magnetic field in a solenoid is influenced by the number of turns of wire per unit length and the electric current passing through the wire.
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