Home
Class 12
PHYSICS
A bulb and a capacitor are connected in ...

A bulb and a capacitor are connected in series to an a.c. source of variable frequency. How will the brightness of the bulb change on increasing the frequency of a.c. source ?

Text Solution

AI Generated Solution

To solve the problem of how the brightness of the bulb changes when the frequency of the AC source is increased, we can follow these steps: ### Step 1: Understand the Circuit Configuration In this circuit, we have a bulb (which acts as a resistive load) and a capacitor connected in series to an AC source. **Hint:** Remember that in an AC circuit, the behavior of components like resistors and capacitors changes with frequency. ### Step 2: Identify the Relationship Between Capacitive Reactance and Frequency ...
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ALTERNATING CURRENT

    RESONANCE ENGLISH|Exercise A.L.P|10 Videos

  • ALTERNATING CURRENT

    RESONANCE ENGLISH|Exercise EXAMPLE|40 Videos

  • ALTERNATING CURRENT

    RESONANCE ENGLISH|Exercise Exercise -3 Part-2|3 Videos

  • ATOMIC PHYSICS

    RESONANCE ENGLISH|Exercise Advanved level problems|17 Videos

Similar Questions

Explore conceptually related problems

An electric bulb and a capacitor are connected in series with an AC source.On increasing the freqency of the source, the brightness of the bulb

A bulb and a conender are connected in series with an A.C source. On increasing the frequency of the source its brightness will

For an LCR series circuit with an ac source of angular frequency omega .

A box P and a coil Q are connected in series with an ac source of variable freguency The emf of the source is constant at 28V The frequency is so adjusted that the maximum current flows in P and Q Find (a) impedance of P and Q at this frequency (b) voltage across P and Q .

Name one d.c. source and one a.c. source.

A capacitor, a resistor and a 40 mH inductor are connected in series to an a.c. source of frequency 60 Hz. Calculate the capacitance of the capacitor,if current is in phase with the voltage.

If resistance R = 10 Omega , inductance L = 2 mH and capacitance C = 5 muF are connected in series to an AC source of frequency 50 Hz, then at resonance the impedance of circuit is

An electric lamp having coil of negligible inductance connected in series with a capacitor and an a.c. source is glowing with certain brightness, Fig. How does the brightness of the lamp change on reducing (i) capacitance (ii) frequency

(a) In a series LCR circuit connected across an AC source of variable frequency, obtain the expression for its impedance and draw a plot showing its variation with frequency of the AC source. (b) What is the phase difference between the voltages across inductor and the capacitor at resonance in the LCR circuit ? (c ) When and inductor is connected to a 200 V DC voltage, a current of 1Aflows trough it. when the same inductor is connected to a 200 V, 50 Hz AC source, only 0.5 A current flows. Explain, why ? Also, calculate the self inductance of the inductor.

An inductance L , a capacitor of 20mu F and a resistor of 10Omega are connected in series with an AC source of frequency 50 Hz . If the current is in phase with the voltage, then the inductance of the inductor is

Home
Profile