Relation and Interaction Between Electric Currents and Magnetic Fields
Relation and Interaction Between Electric Currents and Magnetic Fields
When will Movement Cause Current to be Produced
When will Movement Cause Current to be Produced
Why is Current Always Generated in Alternating Form
Why is Current Always Generated in Alternating Form
Sample
key phrasing guide:
- the interaction of the magnetic field due to -------- and the magnetic field due to --------- produces a combined unbalanced magnetic field, where there is a resultant force acting from the stronger magnetic field to the weaker magnetic field.
Sample
Explain why motor can be used as generator When a motor is rotated, there is a change in magnetic flux linked to the coil. This induces an emf and a current in the coil. Therefore, the motor can become a generator
why soft iron core?
- To ensure maximum magnetic flux linkage of primary coil with secondary coil by concentrating magnetic field lines.
Sample
How does maglev train work superconducting electromagnets produce magnetic field which changes as the train moves. this changing magnetic flux linkages caused an induced current. by Lenz’s law, the direction of induced current is always opposed the change that produces it, so the train and track repel.