The charging current drawn by the cable is

A. Lags voltage by 90°

B. Lead voltage by 90°

C. Lead voltage by 45°

D. None of the above

Answer: B. Lead voltage by 90°

Explanation:

The charging current drawn by the cable is capacitive in nature, therefore, it leads the voltage by 90°. 

In a transmission line, air acts as a dielectric medium between the conductors. This current is called the charging current in the transmission line. 

In other words, we can say, the current associated with the capacitance of a line is known as the charging current.

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