Question:

Strength of magnetic field produced by a current carrying solenoid DOES NOT depend upon:

Updated On: Jun 10, 2025
  • number of turns in the solenoid
  • direction of the current flowing through it
  • radius of solenoid
  • material of core of the solenoid
Hide Solution
collegedunia
Verified By Collegedunia

The Correct Option is B

Solution and Explanation

Step 1: Understanding the strength of magnetic field produced by a current-carrying solenoid:
The magnetic field produced by a solenoid is dependent on several factors. These include the amount of current flowing through the solenoid, the number of turns of the coil (N), and the length of the solenoid. The magnetic field inside the solenoid is given by the formula:
\[ B = \mu_0 \frac{N}{L} I \] Where:
- \( B \) is the magnetic field strength.
- \( \mu_0 \) is the permeability of free space.
- \( N \) is the number of turns of the solenoid.
- \( L \) is the length of the solenoid.
- \( I \) is the current flowing through the solenoid.


Step 2: Factors that affect the strength of the magnetic field:
- The strength of the magnetic field is directly proportional to the current \( I \) and the number of turns \( N \) of the solenoid.
- The magnetic field is inversely proportional to the length \( L \) of the solenoid.
- The material of the solenoid (i.e., its core material) can also affect the strength of the magnetic field, but the direction of the current flowing through the solenoid does not affect the field's strength.


Step 3: Analyzing the options:
The magnetic field produced by the solenoid depends on factors such as the current (\( I \)), the number of turns (\( N \)), and the length of the solenoid (\( L \)), but not on the direction of the current flowing through it. While the direction of the current determines the direction of the magnetic field, it does not influence the strength of the magnetic field.


Step 4: Conclusion:
The correct answer is: direction of the current flowing through it. The strength of the magnetic field in a solenoid does not depend on the direction of the current, but on factors like the current magnitude, the number of turns of the solenoid, and its length.

Was this answer helpful?
0
0