Answer
Verified
396.3k+ views
Hint: We know that an AC circuit has input voltage and current, in the sinusoidal form. Thus there are 3 possible relationships between voltage and current in the circuit. 1. Voltage lags current or current leads voltage, 2. Voltage leads current or current lags voltage and 3. Voltage and current are in the same phase.
Complete answer:
A purely resistive circuit or a non-inductive circuit is a circuit where inductance is very small or negligible as compared to the resistance. Here the voltage applied is used to overcome the ohmic resistance of the circuit.
We know that the source of an AC circuit is sinusoidal. Then there is a phase difference between the voltage and current. If the phase difference between the current and voltage is zero, then both are said to be in phase, and if the phase difference is not equal to zero, then both are said to be out of phase.
If the load of the circuit is purely resistive, then there is no lag between the voltage and the current in the circuit. This means that both the current and voltage reverse their polarity at the same time. Then at any given instant of time, the product of voltage and current i.e. the power is either positive or zero. In AC circuits, there are two types of power namely, the active power which is the average of the one complete wave form, and the other is the reactive power, which is due to the stored energy.
Thus clearly, in purely resistive AC circuits, current and voltage are in the same phase or have no lag.
So, the correct answer is “Option C”.
Note:
The phase difference between voltage and current is zero in a purely resistive AC circuit. i.e. that both the current and voltage reverse their polarity at the same time. Then, the active power of the circuit is always positive or zero and never negative.
Complete answer:
A purely resistive circuit or a non-inductive circuit is a circuit where inductance is very small or negligible as compared to the resistance. Here the voltage applied is used to overcome the ohmic resistance of the circuit.
We know that the source of an AC circuit is sinusoidal. Then there is a phase difference between the voltage and current. If the phase difference between the current and voltage is zero, then both are said to be in phase, and if the phase difference is not equal to zero, then both are said to be out of phase.
If the load of the circuit is purely resistive, then there is no lag between the voltage and the current in the circuit. This means that both the current and voltage reverse their polarity at the same time. Then at any given instant of time, the product of voltage and current i.e. the power is either positive or zero. In AC circuits, there are two types of power namely, the active power which is the average of the one complete wave form, and the other is the reactive power, which is due to the stored energy.
Thus clearly, in purely resistive AC circuits, current and voltage are in the same phase or have no lag.
So, the correct answer is “Option C”.
Note:
The phase difference between voltage and current is zero in a purely resistive AC circuit. i.e. that both the current and voltage reverse their polarity at the same time. Then, the active power of the circuit is always positive or zero and never negative.
Recently Updated Pages
Assertion The resistivity of a semiconductor increases class 13 physics CBSE
The branch of science which deals with nature and natural class 10 physics CBSE
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Summary of the poem Where the Mind is Without Fear class 8 english CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Write an application to the principal requesting five class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE