A current of 3 A 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 30° with the direction of the field. It experiences a force of magnitude

Question

A current of 3 A 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 30° with the direction of the field. It experiences a force of magnitude (A) 3 × 10-4 N (B) 3 × 10-2 N (C) 3 × 102 N (D) 3 × 104 N

Tardigrade Admin · Accepted Answer

F = I ℓ B sin θ=3 × 0.40 ×(500 × 10-4) × sin 30° =3 × 10-2 N

Q. A current of $3 A$ is flowing in a linear conductor having a length of $40 c m$ . The conductor is placed in a magnetic field of strength $500$ gauss and makes an angle of $3 0^{\circ}$ with the direction of the field. It experiences a force of magnitude

$3 \times 1 0^{- 4} N$

$3 \times 1 0^{- 2} N$

$3 \times 1 0^{2} N$

$3 \times 1 0^{4} N$

$F = I ℓ B sin θ = 3 \times 0.40 \times (500 \times 1 0^{- 4}) \times sin 3 0^{\circ}$
$= 3 \times 1 0^{- 2} N$

Q. A current of 3A is flowing in a linear conductor having a length of 40cm. The conductor is placed in a magnetic field of strength 500 gauss and makes an angle of 30∘ with the direction of the field. It experiences a force of magnitude

3×10−4N

3×10−2N

3×102N

3×104N