A coil of inductance 0.5 henry is connected to a 18 volt battery. Calculate the initial rate of growth of current.

Explanation

To solve the problem, we need to calculate the initial rate of growth of current (di/dt) in a coil of inductance (L) connected to a voltage (V) source. The relationship between the electromotive force (emf), inductance, and the rate of change of current is given by the formula:

\[ V = L \frac{di}{dt} \]

Where:
- \( V \) is the voltage (emf) across the coil,
- \( L \) is the inductance of the coil,
- \( \frac{di}{dt} \) is the rate of change of current.
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