A coil of self-inductance L is connected...

A coil of self-inductance `L` is connected in series with a bulb `B` and an `AC` source. Brightness of the bulb decreases when

frequency of the AC source is decresed

number of turns in the coil is reduced

a capacitance of reactance `X_(C )=X_(L)` is included in the same circuit

an iron rod is inserted in the coil

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

ELECTROMAGNETIC INDUCTION
TARGET PUBLICATION|Exercise EVALUATION TEST|8 Videos
ELECTROMAGNETIC INDUCTION
TARGET PUBLICATION|Exercise CRITICAL THINKING|84 Videos
ELASTICITY
TARGET PUBLICATION|Exercise Evaluation test|14 Videos
ELECTROSTATICS
TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

Similar Questions

Explore conceptually related problems

An inductor L of inductance X_(L) is connected in series with a bulb B and an AC source . How would brightness of the bulb change when (i) number of turns in the inductor is increased (ii) an iron rod is inserted in the inductor and (iii) a capacitor of reactance X_(C)=X_(L) is inserted in series .

An inductor is connected in series with a bulb to an a.c source. What happens to brighness of bulb when number of turns in the inductor is reduced ?

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

Two identical coils each of self-inductance L , are connected in series and are placed so closed to each other that all the flux from one coil links with the other. The total self-inductance of the system is

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

An iron cored coil is connected in series with an electric bulb, with an AC source, as shoen in figure. As the iron piece is taken out of the coil, how will tthe brightness of bulb challenge ?

TARGET PUBLICATION-ELECTROMAGNETIC INDUCTION-COMPETITIVE THINKING

Assertion : An emf vec(E) is induced in a closed loop where magnetic f...
Text Solution
|
In an AC circuit containing only capacitance the current
Text Solution
|
A coil has resistance 30 ohm and inductive reactance 20 ohm at 50 Hz f...
Text Solution
|
A resistor 20Omega, inductive reactance 15Omega and capacitive reactan...
Text Solution
|
Same current is flowing in two alternating circuits. The first circuit...
Text Solution
|
An electric heater consumes 1 kilowatt power when connected across a 1...
Text Solution
|
An ac ammeter is used to measure currnet in a circuit. When a given di...
Text Solution
|
A transmitter transmits at a wavelength of 300 m. A condenser of capac...
Text Solution
|
In an electrical circuit R,L,C and an AC voltage source are all connec...
Text Solution
|
An AC voltage source of variable angular frequency (omega) and fixed a...
Text Solution
|
A bulb is connected first with DC and the then AC of same voltage then...
Text Solution
|
The average power is dissipated in a pure inductor is
Text Solution
|
A coil of self-inductance L is connected in series with a bulb B and a...
Text Solution
|
A current of 25//piHz frequency is passing through an A.C. circuit hav...
Text Solution
|
A coil of inductive reactance 1//sqrt(3)Omega and resistance 1Omega is...
Text Solution
|
A series R-C circuit is connected to an alternating voltage source. Co...
Text Solution
|
The frequency of the ouput signal becomes times by doubling the value...
Text Solution
|
A 16 muF capacitor is charged to 20 volts. The battery is then disconn...
Text Solution
|
The natural frequency of an LC circuit is 125kHz. When the capacitor i...
Text Solution
|
An alternating EMF of frequency (1)/(2pi sqrt(LC)) is applied to a ser...
Text Solution
|