Physics-
General
Easy
Question
In the circuit shown in figure : 
and 
mF. Current in 
circuit is 
in 
circuit is 
and the main current is 
Phase different between and is
- 0°
- 90°
- 180°
- 60°
The correct answer is: 60°
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In the LCR circuit shown in figure
A) current will lead the voltage
B) rms value of current is 20 A
C) power factor of the circuit is 
D) voltage drop across resistance is 100 V
In the LCR circuit shown in figure
A) current will lead the voltage
B) rms value of current is 20 A
C) power factor of the circuit is
D) voltage drop across resistance is 100 V
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In the circuit shown in fig. If both the lamps 
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In the circuit shown in fig. If both the lamps and are identical.
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The diagram shows a capacitor C and a resistor R connected in series to an ac source. 
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II) Reading in is ahead in phase with reading in
III) Readings in A and are always in phase which of these statements are/is correct
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In the circuit shown in the figure, the ac source gives a voltage V=20cos(2000t). Neglecting source resistance, the voltmeter and ammeter reading will be
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The resonance point in 
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The resonance point in and curves is
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A constant voltage at different frequencies is applied across a capacitance 
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Correctly depicts the variation of current with frequency ?
A constant voltage at different frequencies is applied across a capacitance as shown in the figure. Which of the following graphs
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A box P and a coil Q are connected in series with an ac source of variable frequency. The rms value of emf of source is constant at 10 V. Box P contains a capacitance of 
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voltage across 
is.
A box P and a coil Q are connected in series with an ac source of variable frequency. The rms value of emf of source is constant at 10 V. Box P contains a capacitance of in series with a resistance of . Coil Q has a self-inductance and a resistance of in series. The frequency is adjusted so that the maximum current flows in P and Q.
voltage across is.
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A box P and a coil Q are connected in series with an ac source of variable frequency. The rms value of emf of source is constant at 10 V. Box P contains a capacitance of in series with a resistance of . Coil Q has a self-inductance and a resistance of in series. The frequency is adjusted so that the maximum current flows in P and Q.
Maximum current through circuit is.
A box P and a coil Q are connected in series with an ac source of variable frequency. The rms value of emf of source is constant at 10 V. Box P contains a capacitance of in series with a resistance of . Coil Q has a self-inductance and a resistance of in series. The frequency is adjusted so that the maximum current flows in P and Q.
Maximum current through circuit is.
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A box P and a coil Q are connected in series with an ac source of variable frequency. The rms value of emf of source is constant at 10 V. Box P contains a capacitance of in series with a resistance of . Coil Q has a self-inductance and a resistance of in series. The frequency is adjusted so that the maximum current flows in P and Q.
Impedance of p at this frequency is.
A box P and a coil Q are connected in series with an ac source of variable frequency. The rms value of emf of source is constant at 10 V. Box P contains a capacitance of in series with a resistance of . Coil Q has a self-inductance and a resistance of in series. The frequency is adjusted so that the maximum current flows in P and Q.
Impedance of p at this frequency is.
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We know that the amplitude of oscillating system becomes maximum, when the applied frequency is equal to the intrinsic frequency of system. And this concept can be applied even in electrical a.c circuits containing 
and 
It is being such that when the frequency of broad casting station becomes equal to frequency of radio circuit, then the impedance (equivalent resistance) of circuit becomes minimum and maximum current flows in the circuit with the result the radio station is tuned its impedance is given by
and 
Now in the given circuit as shown, at a certain moment of the values of voltages and current are given When power loss through resistor is 50 watt, then angular frequency of applied a.c voltage is
We know that the amplitude of oscillating system becomes maximum, when the applied frequency is equal to the intrinsic frequency of system. And this concept can be applied even in electrical a.c circuits containing and It is being such that when the frequency of broad casting station becomes equal to frequency of radio circuit, then the impedance (equivalent resistance) of circuit becomes minimum and maximum current flows in the circuit with the result the radio station is tuned its impedance is given by
and
Now in the given circuit as shown, at a certain moment of the values of voltages and current are given When power loss through resistor is 50 watt, then angular frequency of applied a.c voltage is
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We know that the amplitude of oscillating system becomes maximum, when the applied frequency is equal to the intrinsic frequency of system. And this concept can be applied even in electrical a.c circuits containing and It is being such that when the frequency of broad casting station becomes equal to frequency of radio circuit, then the impedance (equivalent resistance) of circuit becomes minimum and maximum current flows in the circuit with the result the radio station is tuned its impedance is given by
and
Now in the given circuit as shown, at a certain moment of the values of voltages and current are given The current in the circuit is
We know that the amplitude of oscillating system becomes maximum, when the applied frequency is equal to the intrinsic frequency of system. And this concept can be applied even in electrical a.c circuits containing and It is being such that when the frequency of broad casting station becomes equal to frequency of radio circuit, then the impedance (equivalent resistance) of circuit becomes minimum and maximum current flows in the circuit with the result the radio station is tuned its impedance is given by
and
Now in the given circuit as shown, at a certain moment of the values of voltages and current are given The current in the circuit is
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We know that the amplitude of oscillating system becomes maximum, when the applied frequency is equal to the intrinsic frequency of system. And this concept can be applied even in electrical a.c circuits containing L,C and R. It is being such that when the frequency of broad casting station becomes equal to frequency of radio circuit, then the impedance (equivalent resistance) of circuit becomes minimum and maximum current flows in the circuit with the result the radio station is tuned its impedance is given by
and
Now in the given circuit as shown, at a certain moment of the values of voltages and current are given The value of applied peak voltage is
We know that the amplitude of oscillating system becomes maximum, when the applied frequency is equal to the intrinsic frequency of system. And this concept can be applied even in electrical a.c circuits containing L,C and R. It is being such that when the frequency of broad casting station becomes equal to frequency of radio circuit, then the impedance (equivalent resistance) of circuit becomes minimum and maximum current flows in the circuit with the result the radio station is tuned its impedance is given by
and
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The potential different across a 2H inductor as a function of time is shown in figure. At time t=0, current is zero Current versus time graph across the inductor will be
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The potential different across a 2H inductor as a function of time is shown in figure. At time t=0, current is zero Current at t=2s is
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