Home
Class 12
PHYSICS
Obtain an expression for the power in a....

Obtain an expression for the power in a.c. circuit containing a resistance and capacitance in series.

Text Solution

Verified by Experts

Average Power :-Average power in a.c. is defined as the product of apparent power and power factor.
Average Power = Apparent Power `xx` Power factor
Average power is also known as true power of an a.c. circuit.
Expression for Average Power of LCR series circuit.
Difference hetween true power and virtual power :
1. True power is measured in watts whereas virtual power is measured in volts-ampere.
2. True power is always less than or equal to virtual power.
3. True power can be measured by single instrument called wattmeter whereas to measure virtual power, we need a voltmeter and an ammeter.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ALTERNATING CURRENTS

    BETTER CHOICE PUBLICATION|Exercise NUMERICALS PROBLEMS |20 Videos

  • ALTERNATING CURRENTS

    BETTER CHOICE PUBLICATION|Exercise MOST EXPECTED QUESTIONS|11 Videos

  • ALTERNATING CURRENTS

    BETTER CHOICE PUBLICATION|Exercise SHORT ANSWERTYPE QUESTIONS|27 Videos

  • CAPACITANCE

    BETTER CHOICE PUBLICATION|Exercise MOST EXPECTED QUESTIONS (3/4 Marks Questions)|2 Videos

Similar Questions

Explore conceptually related problems

In an a.c. circuit containing inductance

Using phasor diagram, derive an expression for the impedance of an a.c. circuit containing inductance, capacitance and resistance in series. What do you mean by resonance ?

Using phasor diagram, derive an expression for the impedance of an a.c. circuit containing inductance, capacitance and resistance in series. What do you mean by resonance ?

Derive an expression for average AC power in a circuit containing inductance, capacitance and resistance in series. How the power differs from virtual power in an a.c. circuit ?

Derive an expression for average AC power in a circuit containing inductance, capacitance and resistance in series. How the power differs from virtual power in an a.c. circuit ?

Define average power in ac. Derive an expression for average power in AC circuit containing L, C and R in series.

Derive an expression for average power is an A.C. circuit containing resistor only.

Find an expression for the impedance of an a.c. circuit containing LCR in series.

Find an expression for the impedance of an a.c. circuit containing LCR in series.

Derive a relation for true power of an a.c. circuit containing L, C and R in series.

Home
Profile