In a capacitive circuit, the current:

Explanation

In a capacitive circuit, the current leads the voltage by a phase angle of ( frac{pi}{2} ) radians, or 90 degrees. Therefore, option (a) "Lags behind voltage by ( frac{pi}{2} )" is the correct statement.Let's briefly discuss the other options:- (b) Is in phase with voltage: This is not correct. In a capacitive circuit, the current and voltage are not in phase; the current leads the voltage.- (c) Is opposite in phase of voltage by ( pi ): This is another way to express the correct relationship. The current is ( pi/2 ) radians ahead of the voltage.- (d) Leads the voltage by ( pi/2 ): This is not correct. The current lags the voltage in a capacitive circuit.So, the correct answer is (a) Lags behind voltage by ( pi/2 ).