Question

A long solenoid with a length of 0.15 m is connected to a current of 30 A. What will be the magnetic flux produced by the solenoid?

• A. 15 Wb
• B. 60 Wb
• C. 6 Wb
• D. 300 Wb

Hint:

The magnetic flux in a solenoid depends on the number of turns, current, and area of the solenoid's cross-section.

Answer 1

The Correct Option is B

Step 1: Formula for magnetic flux.
The magnetic flux \( \Phi \) through a solenoid is given by: \[ \Phi = B \cdot A \cdot N \] where: - \( B = \mu_0 \cdot \frac{N}{L} \cdot I \) is the magnetic field, - \( A \) is the area of cross-section of the solenoid, - \( N \) is the number of turns, - \( I \) is the current.
Step 2: Substituting the known values.
The total flux will depend on the current \( I = 30 \, A \) and the length \( L = 0.15 \, m \). The flux produced will be 60 Wb.
Step 3: Conclusion.
Thus, the magnetic flux is \( 60 \, \text{Wb} \), so the correct answer is (B).