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4 cards from this section. Quick, good the night before a test.
What is self-inductance?
Think about how a coil reacts when you change the current running through it.
Write the formula for mutual inductance.
Consider what happens when current changes in one coil.
What is self-inductance?
Think about what happens when you try to change the conditions in a coil.
True or False: Mutual inductance can only occur between two identical coils.
Remember that coils only need to be close enough.
Calculate the induced emf in a coil with an inductance of 5 H if the current changes from 3 A to 0 A in 2 seconds.
Make sure to convert your change in current correctly!
A transformer has a primary coil with 100 turns and a secondary coil with 50 turns. If the primary current changes at 2 A/s, what is the induced emf in the secondary coil, assuming mutual inductance M = 1.2 H?
You only need to apply the formula for mutual inductance.
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