Question

3 A of current is flowing in a linear conductor having a length of 40 cm. The conductor is placed in a magnetic field of strength 500 gauss and makes an angle of 30⁰ with the direction of the field. It experiences a force of magnitude

• A. 3 × 10⁴ N
• B. 3 × 10² N
• C. 3 × 10^{– 2} N
• D. 3 × 10^–4 N

Answer 1

Answer: (C)

3 × 10^{– 2} N

Answer 2

By using $F = B i l \sin \theta$ ⇒ F = (500 × 10^–4) × 0.4 × sin 30^o

⇒ 3 × 10^–2 N.