In case of pure inductance connected across AC supply
Options
Current and Voltage are out of phase
Current lead the voltage by 90 degrees
Current lags the voltage by 90 degrees
Current and Voltage are in phase
Answers
Given : pure inductance connected across AC supply
To Find : Choose correct option :
Current and Voltage are out of phase
Current lead the voltage by 90 degrees
Current lags the voltage by 90 degrees
Current and Voltage are in phase
Solution:
in case of Pure inductive circuit: Inductor current lags inductor voltage by 90°
Current lags the voltage by 90°
For Resistive circuit Current and voltage are in phase
in case of pure capacitance Current lead the voltage by 90°
in case of Resistance + capacitance and or inductance
Current and Voltage are out of phase
Current lags the voltage by 90° is correct option
in case of pure inductance connected across AC supply
inductive circuits
Positive phase for inductive circuits
current lags the voltage in pure inductive circuit by π/2
Capacitive circuits
Negative phase for Capacitive circuits
current leads the voltage in pure Capacitive circuit by π/2
Hence Voltage lags the current by π/2
Resistive circuits
Voltage ( EMF) & current are in same phase for pure resistive circuit
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Answer:
urrent and Voltage are out of phase