Physics-
General
Easy
Question
A voltage source V = 
sin (100 t) is connected to a black box in which there can be either one element out of L, C, R or any two of them connected in series
At steady state. the variation of current in the circuit and the source voltage are plotted together with time, using an oscilloscope, as shown
Values of the parameters of the elements, present in the black box are –
- None of these
The correct answer is:
Related Questions to study
physics-
A voltage source V = sin (100 t) is connected to a black box in which there can be either one element out of L, C, R or any two of them connected in series
At steady state. the variation of current in the circuit and the source voltage are plotted together with time, using an oscilloscope, as shown
The element(s) present in black box is/are :
A voltage source V = sin (100 t) is connected to a black box in which there can be either one element out of L, C, R or any two of them connected in series
At steady state. the variation of current in the circuit and the source voltage are plotted together with time, using an oscilloscope, as shown
The element(s) present in black box is/are :
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An ac generator G with an adjustable frequency of oscillation is used in the circuit, as shown.
Thermal energy produced by the resistance R in time duration 1 
s, using the source at resonant condition, is
An ac generator G with an adjustable frequency of oscillation is used in the circuit, as shown.
Thermal energy produced by the resistance R in time duration 1 s, using the source at resonant condition, is
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An ac generator G with an adjustable frequency of oscillation is used in the circuit, as shown.
Average energy stored by the inductor 
(Source is at resonance frequency) is equal to
An ac generator G with an adjustable frequency of oscillation is used in the circuit, as shown.
Average energy stored by the inductor (Source is at resonance frequency) is equal to
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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 –
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 –
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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 –
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 –
physics-General
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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 
is the rms voltage across the source, then 
.
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 :
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 
are identical :
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 
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 :
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
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:
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:
physics-General
