H2 Physics 17 - Electromagnetic Forces: Force on a Current-Carrying Conductor

What you will learn

• Straight wire 0.25 m long carrying 4.0 A in a 0.30 T field at 30 degrees to the field.
• F = B I L sin theta = 0.30 x 4.0 x 0.25 x 0.5 = 0.15 N.
• Direction by Fleming's left-hand rule: First finger Field, Second finger Current, Thumb Thrust; F is perpendicular to both.