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TASPhysicsQuick questions
Unit 3: Gravity and Electromagnetism
Quick questions on Electromagnetism and motors - TCE Physics (Tasmania)
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is force on a current-carrying conductor?Show answer
When a straight conductor of length carrying current sits in a uniform magnetic field of strength , it experiences a force:
What is force on a moving charge?Show answer
A single charge moving at speed through a field feels:
What is the DC motor?Show answer
A direct current motor converts electrical energy into rotational kinetic energy using the motor effect. A rectangular coil carrying current sits in a magnetic field. The two sides of the coil that lie across the field experience forces in opposite directions (because the current flows in opposite directions in them), producing a turning effect, or torque, on the coil.
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