A 2 m wire carries 2 A perpendicular to a 0.2 T field. What magnetic force acts on it?

A) 0.4 N

B) 1.2 N

C) 1.6 N

D) 0.8 N

Answer: D

Explanation: Use magnetic force = field × current × length at 90° for the stated idealized conditions. Substitution gives 0.2 × 2 × 2 = 0.8 N.

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