Question
When current in a coil changes with time, how is the back emf induced in the coil related to it?
Solution
When current in a coil changes with time, then
Back emf,
where, I is the current and L is the self-inductance.
Self-induced emf is called the back emf as it opposes any change in the current in a circuit.
Back emf,
where, I is the current and L is the self-inductance.
Self-induced emf is called the back emf as it opposes any change in the current in a circuit.
