Physics question and answers for November 15, 2023
- Q 3 The input signal given to a CE amplifier having T a voltage gain of 150 is V 2 cos 15t 05 15 3 The corresponding output signal will be...
- Q A series R C circuit is connected to an alternating voltage source Consider two situations a When capacitor is air filled b When capacitor is mica filled Current through resistor...
- Q The A C circuit shown in figure Find the frequency of the AC voltage source so that current through the source will be in same phase as of voltage of...
- Q 17 D The diagram shows a capacitor C and a R connected in series to an AC source V and V are voltmeters and A is an ammeter Consider now...
- Q supply voltage is V Vosin 100nt 40V Z 502 and R 40 Then match the column L II V voodoo L C connected to an ac source the 7 V...
- Q 2 4 A direct current of 5 A is superimposed on an alternating current 10 sinot flowing through a wire The effective value of the resulting current will be 1...
- Q 32 To get steady DC output from pulsating voltage output of Rectifer we connect 1 Capacitor in parallel or inductor in series with Load R 2 Capacitor in series or...
- Q 2 The electric current in a circuit is given by i i t t for some time Calculate the rms current for the period t 0 to t t
- Q If an A C main supply is given to be 220 V What would be the average e m f during a positive half cycle 1 198 V 2 386...
- Q 4 In the circuit shown resistance reactance of R L respectively The and C are 40 92 80 2 and 50 supply emf is 250 V 50 Hz AC The...
- Q A variable emf device V is applied across the series combination of resistance R and capacitor C such that the potential difference across resistance VR with time as shown in...
- Q 13 The current drawn by the primary coil of a transformer which steps down 220 V impedance of 220 V is
- Q In series RLC circuit at resonance condition find average energy stored in inductor where peak voltage of source is 10 volt R 10 22 C 1 F mal L 1H...
- Q A capacitor of capacitance C and an ideal inductor of inductance L are connected in series with ideal battery of emf E The resistance of circuit is negligible If initially...
- Q Current Electricity N For the circuit shown in figure find the voltage across 102 resistor and the current passing through it KC7 55 10 210 A 20 current source 125A...
- Q 37 An AC source is rated 220 V 50 Hz The average voltage calculated in time interval of 0 01 s 1 May be zero 2 Must be zero 3...
- Q In an AC circuit voltage V Vosinot and inducto L is connected across the circuit Then th instantaneous power will be Vinzult Lo V 1 sinot 20L 0 3 0...
- Q coil of self inductance L is connected in series with a bulb B and an AC source Brightness of the bulb decrease when NEET 2013 1 Number of turns in...
- Q Switch is closed at t 0 then current in the circuit L 2R at t 1 R is R roos www E 2 1093 S 8 R L
- Q A L R combination is connected to a battery of emf 4 volt If L 0 1 H and R 4 0 92 then the time taken to reach a...
- Q resistance and a capacitor of 100 reactance are connected in series across a 220 V source When the capacitor is 50 charged the peak value of the displacement current is...
- Q Figure shows an L R circuit When the switch S is closed the current through resistor R R and R are 1 12 and I respectively The value of 1...
- Q A capacitor in an LC oscillator has a maximum potential difference of 15 V and maximum energy of 360 J At a certain instant the energy in the capacitor is...
- Q 4 In he value of resistance R if the total voltage is in phase with the total current is nearly 2022 www 1 24 22 2 892 3 12 92...
- Q Alternating Current 127 20 If reading of voltmeter V shown in the figure at resonance is 200 V then the quality factor of the circuit is 1 2 2 4...
- Q In the circuit shown currento comes out to be is 10 R 110 L m NV 2R X X cosmt value of N
- Q An alternating voltage V 200 2 sin 100t where Vis in volt and t in seconds is connected to a series combination of 1 F capacitor and 10k2 resistance through...
- Q a 3000 resistance If a 20V 200 Hz ac source is connected across the combination the phase difference between the voltage and the current is 2 tan 1 tan 3...
- Q A direct current of 5 amp is superimposed on an alternating current I 10 sin at through a wire The effective value of the resulting current will be 5 x...
- Q An LCR series circuit contains L 8H C 0 5 F and R 1000 The resonant frequency of he circuit is 1000 1 3 70 Hz 250 7L Hz 2...
- Q In a circuit resistance R capacitance C and inductance L are in series with a sinusoidal power source If the voltages across R C and L are 80V 10V and...
- Q ce L a capacitance C and resistance R may be connected to an AC source of angular frequency w in three different combinations of RC RL and RLC in series...
- Q A series R L circuit is subjected to an alternating voltage given as v vosinot Then the variation of peak current 1 with frequency v is denoted by CIVIL dzio...
- Q Resonant frequency of a series LCR circuit is 600 Hz Quality factor of the circuit is 4 Banc width is 1 300 Hz 3 1200 Hz 2 150 Hz 4...
- Q Illustration 4 A series circuit consists of a resistance of 1502 an inductance of 0 08 H and a condenser of capacity 30 F The applied voltage has a frequency...
- Q turn ratio is 50 If primary coil is 1 k then secondary coil will be In transformar resistance resistance 1 50 k OF X 3 25 MO 2 25 kn...
- Q The instantaneous values of alternating current and voltage in a circuit are given as 1 T sin 100nt A and E 2 The average power in watts 1 n The...
- Q From an L C R series circuit the quality factor is 4 If C 8 F and R 202 then the value of the inductance is 1 8 uH 2...
- Q A capacitor of 1 F is charged and then connected across an ideal inductor of 10 mH The angula frequency of oscillation of the charge in rad s is 1...
- Q A 220 V main supply is connected to a resistance of 100k2 The rms current is 1 2 2 mA 2 2 2 mA 3 2 2 2 mA 4...
- Q An L C R series circuit with 100 2 resistance is connected to an AC source of 200 V and angular frequency 300 rad s When only the capacitance is...
- Q In L C oscillator initially current is maximum then instant when capacitor has maximum energy first time 1 LC 2 LC
- Q When an ac source of emf E Eo sin 100t is connected across a circuit the phase difference between the emf E and the current I in the circuit is...
- Q An ac voltage is applied to a resistance R and an inductor L in series If R and the inductive reactance are both equal to 302 the phase difference between...
- Q 35 Which of the shown graphs may represent the reactance of a series L C combination Reactance Reactance a c Reactance Frequency Frequency b Reactance d Frequency Frequency
- Q 100 Hz AC current of crest value 1 A flows TC through the primary of an ideal transformer If the mutual inductance between the primary and secondary be 0 5...
- Q 26 In an oscillating L C circuit the maximum charge on the capacitor is Q The charge on the capacitor when the energy is stored equally between the electric and...
- Q 20 If reading of voltmeter V shown in the figure at resonance is 200 V then the quality factor of the circuit is 1 2 2 4 3 1 mmmmm...
- Q An alternating emf is applied across a parallel of a resistance R capacitance C and a L If IR IL and Ic are the currents through R L and C...
- Q 19R The frequency of an alternating current is 50Hz The minimum time taken by it in reaching from zero to peak value is 1 5ms 4 50ms 2 10 ms...
- Q A capacitor C 2 F and an inductor with L 10 H and coil of resistance 50 are in series in a circuit When an alternating current of rms value...
- Q A voltage waveform is as shown V 0 V R M S value of voltage is 1 Vo Vo 2 2 1
- Q wave rectifier is 40 6 and of full wave rectifier is 81 296 r 1 21 for FWR asurement is given by a factor called ripple factor For good rectifier...
- Q The diagram shows a capacitor C and a resistor R connected in series to an AC source V and V are voltmeters and A is an ammeter Consider now the...
- Q 9 In the circuit shown in figure the current measured by ammeter Is 60 V 100 V V 1 3 1A 3 A wwwww vo v vo vo v R...
- Q A capacitor and a bulb are connected in series with a source of alternating emf If a dielectric slab is inserted between the plates of the capacitor then 1 The...
- Q Equation of alternating current is given by 10 2 sin 100rt TU 6 root mean square value from t 0 is t then the value of t is 1 3...
- Q In the circuit shown a 30 V d c source gives a current 2 0 A and a 30 V a c source of frequency 100 Hz gives a current...
- Q 29 The maximum efficiency of a full wave rectifier is 8 4 80 1 4 T 3 40 100 2 100 27 R
- Q 51 In the circuit below A and B represent two inputs and C represents the output The circuit NOT represents 1 NOR gate 2 AND gate 3 NAND gate A...
- Q In a circuit L C and R are connected in series with an alternating voltage source of frequency f The current leads the voltage by 45 The value of C...
- Q The impedance of R C circuit is Z for a frequency f and Z for frequency 2f Then Z is 1 Between 1 and 2 2 2 1 3 Between...
- Q In the circuit shown in figure the potential difference across 10 F capacitor is B 9X Zero 3 36 V A 49 3 F www 2Q 10 F 54V 6...
- Q 27 The equivalent inductance of two inductor is 2 4 H when connected in parallel and 10 H when connecte series The difference between two inductance is Neglecting mutual induction...
- Q factor c the bandwidth d the cutoff frequencies e the magnitude of current I and the series resonant circuit shown below find a The resonant frequency b the quality magnitudes...
- Q A 130 V 200Hz power supply is connected across a 10 k resistor 0 05 capacitor and a 10 H coil in series Find X Xc Z 8 I and...
- Q 1 A 12 0 V storage battery is connected to three resistors 5 0 Q2 10 0 02 and 15 0 2 respectively The resistors are joined in series a...
- Q A 1200 V power source is applied to a step down transformer with 4200 turns in the primary coil and 840 turns in the secondary coil What is the secondary...
- Q AC Source V Electrical Path Fig Purely Capacitive Circuit An 9 80 F capacitor is connected to the terminals of an AC generator with an rms voltage of 1 70...
- Q on 19 A coil with an inductance 0 14 H and a resistance of 12 ohm is connected acros V 25 Hz source What would be the phase angle between...
- Q A series LRC circuit consists of a 10 00 pF capacitor a 7 5 mH inductor a 75 0 Q resistor and a 50 0 V ac power source of...
- Q If the voltage amplitude across an 8 50 nF capacitor is equal to 12 0 V when the current amplitude through it is 3 33 mA the frequency is closest...
- Q Question 37 A coil has an inductance of 1 5 H and a resistance of 0 6 ohm If the coil is suddenly connected across a 12 V battery find...
- Q A 120 V ac voltage source is connected across a 2 0 micro F capacitor What will be current to the capacitor if the frequency of the source is 60...
- Q A coil with an inductance 0 14 H and a resistance of 12 ohm is connected across a 110 V 25 Hz source Compute the current in the coil and...
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