what is meant by lagging and leading current in ac circuit
Leading and lagging current
Leading and lagging current are phenomena that occur as a result of alternating current . In a circuit with alternating current , the value of voltage and current vary sinusoidally . In these types of circuits , the terms lead , lag , or in phase are used to describe current with reference to voltage . Current is in phase with voltage when there is no phase shift between the sinusoids describing their time varying behavior . This generally occurs when the load drawing the current is resistive . 
Leading and lagging current are phenomena that occur as a result of alternating current . In a circuit with alternating current , the value of voltage and current vary sinusoidally . In these types of circuits , the terms lead , lag , or in phase are used to describe current with reference to voltage . Current is in phase with voltage when there is no phase shift between the sinusoids describing their time varying behavior . This generally occurs when the load drawing the current is resistive .
Leading and lagging current are phenomena that occur as a result of alternating current . In these types of circuits , the terms lead , lag , or in phase are used to describe current with reference to voltage .
Leading and lagging current are phenomena that occur as a result of alternating current . In these types of circuits , the terms lead , lag , or in phase are used to describe current with reference to voltage .