Physics

Magnetic Force on a Current-Carrying Wire Calculator

Find the force on a wire in a magnetic field.

Magnetic field (T)

Current (A)

Wire length

Angle to field (°)

Calculated Output

Force (N) 1.2

Formula: F = B·I·L·sinθ

Step-by-Step Breakdown

1. Values used:

2. Magnetic field = 0.5 T

3. Current = 8 A

4. Wire length = 0.3

5. Angle to field = 90 °

7. Force = Magnetic field x Current x Wire length = 0.5 x 8 x 0.3 = 1.2N

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The math behind it

F = B·I·L·sinθ, greatest when the wire is perpendicular to the field.

0.5 T, 8 A, 0.3 m, 90° → 1.2 N.

How do electric motors use this?

Force on current loops in a magnetic field produces the turning torque.