Physics-
General
Easy
Question
An ac generator G with an adjustable frequency of oscillation is used in the circuit, as shown.
If the ac source G is of 100 V rating at resonant frequency of the circuit, then average power supplied by the source is –
- 50 W
- 100 W
- 500 W
- 1000 W
The correct answer is: 100 W
Average energy stored =
Related Questions to study
physics-
An ac generator G with an adjustable frequency of oscillation is used in the circuit, as shown.
To increase resonant frequency of the circuit, some of the changes in the circuit are carried out. Which change(s) would certainly result in the increase in resonant frequency ?
An ac generator G with an adjustable frequency of oscillation is used in the circuit, as shown.
To increase resonant frequency of the circuit, some of the changes in the circuit are carried out. Which change(s) would certainly result in the increase in resonant frequency ?
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An ac generator G with an adjustable frequency of oscillation is used in the circuit, as shown.
Current drawn from the ac source will be maximum if its angular frequency is –
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Current drawn from the ac source will be maximum if its angular frequency is –
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Statement-1 : In a series R,L,C circuit if 
, 
, and 
denote rms voltage across R, L and C repectively and 
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.
Statement-2 : In AC circuits, kirch off voltage law is correct at every instant of time.
Statement-1 : In a series R,L,C circuit if , , and denote rms voltage across R, L and C repectively and is the rms voltage across the source, then .
Statement-2 : In AC circuits, kirch off voltage law is correct at every instant of time.
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In the AC circuit shown below, the supply voltage has constant rms value V but variable frequency f. At resonance, the circuit :
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In the circuit shown in figure, if both the bulbs 
and 
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In the circuit shown in figure, if both the bulbs and are identical :
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A resistor R, an inductor L, a capacitor C and voltmeters 
, 
and 
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A resistor R, an inductor L, a capacitor C and voltmeters , and are connected to an oscillator in the circuit as shown in the adjoining diagram. When the frequency of the oscillator is increased, up to resonance frequency, the voltmeter reading (at resonance frequency) is zero in the case of :
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In the series LCR circuit as shown in figure, the voltmeter and ammeter readings are :
In the series LCR circuit as shown in figure, the voltmeter and ammeter readings are :
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A time varying voltage V = 2t volt is applied across an ideal inductor of inductance L = 2H as shown in figure. Then select incorrect statement
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A symmetrical converging convex lens of focal length 10 cm & diverging concave symmetrical lens of focal length - 20 cm are cut from the middle and perpendicularly and symmetrically to their principal axis. The parts thus obtained are arranged as shown in the figure. The focal length of this arrangement will be:
A symmetrical converging convex lens of focal length 10 cm & diverging concave symmetrical lens of focal length - 20 cm are cut from the middle and perpendicularly and symmetrically to their principal axis. The parts thus obtained are arranged as shown in the figure. The focal length of this arrangement will be:
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In the given figure an object ' O ' is kept in air in front of a thin plano convex lens of radius of curvature 10 cm. It's refractive index is 3/ 2 and the medium towards right of plane surface is water of refractive index 4/3. What should be the distance ' x ' of the object so that the rays become parallel finally
In the given figure an object ' O ' is kept in air in front of a thin plano convex lens of radius of curvature 10 cm. It's refractive index is 3/ 2 and the medium towards right of plane surface is water of refractive index 4/3. What should be the distance ' x ' of the object so that the rays become parallel finally
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In the figure shown, the image of a real object is formed at point I. AB is the principal axis of the mirror. The mirror must be:
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In the given figure a parallel beam of light is incident on the upper part of a prism of angle 
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= 3.14]
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In the shown figure 
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In the figure shown a point object O is placed in air. A spherical boundary of radius of curvature 1.0 m separates two media. AB is principal axis. The refractive index above AB is 1.6 and below AB is 2.0. The separation between the images formed due to refraction at spherical surface is
In the figure shown a point object O is placed in air. A spherical boundary of radius of curvature 1.0 m separates two media. AB is principal axis. The refractive index above AB is 1.6 and below AB is 2.0. The separation between the images formed due to refraction at spherical surface is
physics-General
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In the figure shown a thin parallel beam of light is incident on a plane mirror 
at small angle 
. 
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physics-General
