Voltage leads current by 90° in a capacitor.

More Questions from Capacitors

• The dielectric constant is the ability of a material to establish an electric field.
• Total parallel capacitance is less than that of the smallest capacitor in parallel.
• The ohm is the unit of capacitance.
• Capacitance is directly proportional to plate area and plate separation.
• A capacitor blocks ac but passes dc.
• The true power in a capacitor is zero.
• Energy is stored by a capacitor in a magnetic field.
• XC is inversely proportional to frequency and capacitance.
• Five time constants are required for a capacitor to charge fully or discharge fully.

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