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**Magnetic Force on a Current Carrying Wire**

Physics Mrs. Coyle

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**Magnetic Force on a Current Carrying Wire**

Lorentz Force- Magnetic Force on a Current Carrying Wire (Fendt Applet)

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**Magnetic Force on a Current Carrying Wire**

F=BILsinq I: current (conventional) q: angle between I and B When q=90o, then F=BIL F

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Problem A wire 86cm long is carrying a current of 0.25A at right angles to a uniform magnetic field of 15T. Find the magnitude of the magnetic force. Answer: 3.3N

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Example What is the direction of the magnetic force acting on this wire? I Answer: Upwards

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DC Motor

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**Which way will the loop turn?**

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**Torque on a Current Carrying Loop**

Electric DC Motor (Fendt Applet)

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Basic DC Motor

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Physics 223 29. Magnetic Fields 29.1 Magnetic Fields (B) and Forces (F) 29.2 Motion of a Charged Particle in B 29.3 Applications: Charged Particle in.

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