Inductance

Inductance

By Rachel Wampler

Inductance

• Induction is a process where emf is induced by changing magnetic ​flux

• Mutual inductance is inductance of one device to another like an transformer

• Change in flux usually by changing current since they are solid pieces

• can be reduced by conterwinding coils​

Self Inductance

• A changing current in a coil causes a changing B-field in the middle of the coil

• Changing B-field causes induced emf in the same coil

• Resists change in current in the device​

Self Inductance

Multiple Choice

The 4.00 A current through a 7.50 mH inductor is switched off in 8.33 ms. What is the emf induced opposing this?

• 7.2 V

• 1.8 V

• 3.60 V

• 10.8 V

Inductance