Question

A force exerted on a 3 m long conductor having a current of 2 A in 0.4 T magnetic induction with an angle of 30° is

• A. 1.2 N
• B. 12 N
• C. 72 N
• D. 2.4 N

Answer 1

The Correct Option is A

he formula to calculate the force on a current-carrying conductor in a magnetic field is:  
\(F = BIL sinθ  \)

Where,  
B =\(B =\) magnetic field \(= 0.4 T  \)
\(I =\) current \(= 2 A\)  
\(L =\) length \(= 3 m  \)
\(θ =\) angle \(= 30° \) 

Substitute the values:  
\(F = 0.4 × 2 × 3 × sin(30°)  \)
\(F = 0.4 × 2 × 3 × 0.5 = 1.2 N\)

The correct answer is option (A): \(1.2 N\)