Question

Define 1 henry of self-inductance.

Hint:

1 henry is the self-inductance of a coil that induces 1 volt for every 1 ampere per second of current change.

Answer 1

1 henry (1 H) of self-inductance is the inductance of a coil in which a change in current of 1 ampere per second produces an electromotive force (EMF) of 1 volt.
Mathematically, the self-inductance \(L\) is related to the induced voltage \(V\) and the rate of change of current \(\frac{dI}{dt}\) by the equation: \[ V = L \times \frac{dI}{dt} \] Where: - \(V\) is the induced voltage in volts,
- \(L\) is the self-inductance in henries,
- \(\frac{dI}{dt}\) is the rate of change of current in amperes per second.
Therefore, 1 henry is defined as the self-inductance of a coil where an increase of 1 ampere per second in current results in an induced voltage of 1 volt.