Home
Class 12
PHYSICS
An ac source is connected to a resistive...

An ac source is connected to a resistive circuits. Which of the following statements are false ?

A

Current leads ahead of voltage in phase

B

Current lags behind voltage in phase

C

Current and voltage are in same phase

D

Any of the above may be true depending upon the value of resistance

Text Solution

Verified by Experts

The correct Answer is:
C
When resistance is connected to A.C. Source, then current & volatge are in same phase.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ALTERNATING CURRENT

    DISHA PUBLICATION|Exercise Exercise - 1 : CONCEPT BUILDER (Topic 3 : Transformers and LC Oscillations)|19 Videos

  • ALTERNATING CURRENT

    DISHA PUBLICATION|Exercise Exercise -2 : Concept Applicator|30 Videos

  • ALTERNATING CURRENT

    DISHA PUBLICATION|Exercise Exercise - 1 : CONCEPT BUILDER (TOPIC 1: Alternating Current, Voltage and Power)|20 Videos

  • ATOMS

    DISHA PUBLICATION|Exercise EXERCISE-2: CONCEPT APPLICATOR|30 Videos

Similar Questions

Explore conceptually related problems

Which of the following statement is incorrect about AC circuit?

An inductor-coil having some resistance is connected to an AC source. Which of the following quantities have zero average value over a cycle?

Knowledge Check

  • An a.c. source of variable angular frequency o is connected to an LCR series circuit. Which one of the following graphs correctly represents variation of impedance Zof a.c. circuit with angular frequency omega ?

    A
    B
    C
    D

  • A resistor, a capacitor and inductor are connected in series with a source of ac which of the following statement is true? The current in resistor lags behind the

    A
    current in capacitor
    B
    current in inductor
    C
    voltage across capacitor
    D
    voltage across inductor

  • A resistance R is connected at the n terminal of a p-n junction in series. An AC voltage is applied across this circuit. Which of the following are true for the circuit?

    A
    Voltage across diode will be positive half cycles.
    B
    Voltage across diode will be positive half cycle
    C
    Voltage across resistance will be negative half cycles.
    D
    Voltage across resistance will be positive half cycles

    • Similar Questions

    Explore conceptually related problems

    For an LCR circuit connected to the AC source match the following

    An ac source is connected to two circuits as shown Obtain current through resistance R at resonance in both the circuits .

    An a.c. source is connected to two circuit as shown in fig. 14.10. Obtain the current through the resistance R at resonance in both the circuits.

    There is an AC source of rms voltage 200 V and frequency 50 Hz. When the source is connected to a circuit then rms current flowing in the circuit is 15 A. Average power delivered by the source

    An ac source is connected across a resistance of 10 Omega The power dissipated in the resistor is 100W The rms valuse of the current and voltge are .

    Home
    Profile