(C) In a purely resistive $AC$ circuit, the voltage $V$ and current $I$ are given by $V = V_m \sin(\omega t)$ and $I = I_m \sin(\omega t)$.Since the p

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Current and voltage are in same phase

(C) In a purely resistive $AC$ circuit, the voltage $V$ and current $I$ are given by $V = V_m \sin(\omega t)$ and $I = I_m \sin(\omega t)$.Since the phase angle for both is $\omega t$, there is no phase difference between them.Therefore, the current and voltage are in the same phase.

Class 12 Physics Alternating Current Only Inductor, Only Capacitor and Only Resistor Circuit

Easy

An $AC$ source is connected to a purely resistive circuit. Which of the following is true?

A
Current leads the voltage and both are in same phase
B
Current lags behind the voltage and both are in same phase
C
Current and voltage are in same phase
D
Any of the above may be true depending upon the value of resistance

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Alternating Current

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Only Inductor, Only Capacitor and Only Resistor Circuit

Let $f = 50\, Hz$ and $C = 100\, \mu F$ in an $AC$ circuit containing a capacitor only. If the peak value of the current in the circuit is $1.57\, A$,the expression for the instantaneous voltage across the capacitor will be (assuming current is $I = I_m \sin(\omega t)$):

Difficult

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$A$ pure inductor of $25.0 \; mH$ is connected to a source of $220 \; V$. Find the inductive reactance and rms current in the circuit if the frequency of the source is $50 \; Hz$.

Medium

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Explain the dissipation of electrical energy when an alternating current passes through a resistor.

Difficult

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$A$ $50 \mu F$ capacitor is connected to a $110 V, 60 Hz$ $AC$ supply. Determine the rms value of the current in the circuit. (in $A$)

EasyGUJCET 2021

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In a circuit,the current lags behind the voltage by a phase difference of $\pi / 2$. The circuit will contain which of the following?

MediumMHT CET 2007

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An $AC$ source is connected to a purely resistive circuit. Which of the following is true?

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Let $f = 50\, Hz$ and $C = 100\, \mu F$ in an $AC$ circuit containing a capacitor only. If the peak value of the current in the circuit is $1.57\, A$,the expression for the instantaneous voltage across the capacitor will be (assuming current is $I = I_m \sin(\omega t)$):

$A$ pure inductor of $25.0 \; mH$ is connected to a source of $220 \; V$. Find the inductive reactance and rms current in the circuit if the frequency of the source is $50 \; Hz$.

Explain the dissipation of electrical energy when an alternating current passes through a resistor.

$A$ $50 \mu F$ capacitor is connected to a $110 V, 60 Hz$ $AC$ supply. Determine the rms value of the current in the circuit. (in $A$)

In a circuit,the current lags behind the voltage by a phase difference of $\pi / 2$. The circuit will contain which of the following?

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