Physics question and answers for December 19, 2023
- Q In the circuit shown here the transistor used has a current gain 100 What should RB be the base resistor RB so that VCE 5 V neglect VBE a 200...
- Q 2 In the following circuit diagram an infinite series of resistances is shown What is the equivalent resistance between points A and B B 10 12 202 202 www 20...
- Q Q11 The virtual current in the a c circuit shown in Fig is 1 0 A Find virtual voltage across the coil L impedance of the circuit and reactance of...
- Q A battery is used to charged a parallel plate capacitor after which it is disconnected Then the plates are pulled apart to twice their original separation This process will doubled...
- Q 10A 11 a 8 18 b 9 18 c 10 18 d 8 8 www View Answer 13 in the circuit shown below 10V aes R3 Answer a Explanation For...
- Q In the figure 1 4 20 V 2 0 772 V R1 6 96 0 R2 2 60 0 R3 5 76 0 and both batteries are ideal What is...
- Q 192 Awwwww B the equivalent resistance between A and B is 202 a 5 Q c 2 5 2 e 7 8 652 wwwwwww 122 2 52 FIGURE 3 9...
- Q What is the equivalent resistance of the following network of resistances 102 19 ww 1923 19 www 19 ww 12 MMM A
- Q 35 Each of the resistors shown in figure 32 E11 has a resistance of 10 Q2 and each of the batteries has an emf of 10 V Find the currents...
- Q 13 Current Electricity Set I 1 A current of 2A flows in a system of conductors shown in fig The potential difference V V will be A 2A D 252...
- Q 5 3 In a step up transformer the turn ratio is 3 2 A battery of EMF 4 5V is connected across the primary windings of transformer The voltage developed...
- Q Hilt ww R R3 R ww www ww R4 R5 ww The figure shows a circuit consisting of a battery and five resistors with resistances and the battery emf listed...
- Q Consider the circuit shown in the figure Figure 1 Suppose the four resistors in this circuit have the values R 11 R 6 2 Rs 6 30 and R 122...
- Q cm and 3 cm Two wires of same length and thickness having specific resistances 6 respectively are connected in parallel The effective resistivity is p 2 cm The value of...
- Q Consider a 72 cm long wire AB as shown in the figure The galvanometer jockey is placed at P on AB at a distance x cm from A The galvanometer...
- Q An ideal gas is expanding such that PT constant The coefficient of volume expansion of the gas is 1 7 7 7 du 3 vott 2 2 1 1 4...
- Q In given network potential drop across A and B is V IR pres sent is same s drop by alb R 5x Rextend 18 2 1 Zoro 492 www 8...
- Q A conductor of resistivity p and resistance R as shown in the figure is connected across a battery of e m f V Its radius varies from a at left...
- Q Two cells of same emf E and internal resistance r are connected in parallel with a resistance of R To get maximum power in the external circuit the value of...
- Q ii 20 V 202 www 2Q www ww 12 A B C 12 ww 5 V 12 wwwww 202 10 V 292 a Find the potential difference between the points...
- Q bulb and three identical resistors form a network as shown in diagram The applied potential such that the bulb is shining brightly A fourth identical resistor is added to the...
- Q The starter motor of a car engine draws a current of 200 A from the battery The copper wire to the motor is 5 70 mm in diameter and 1...
- Q 3 The plot represents the flow of current through a wire for different time intervals The ratio of charges flowing through the wire corresponding to these time intervals is see...
- Q Magnitude of work done in moving 1 coulomb of charge from point A to point Bis 1 eit onder and far A farg Bars far fard A 5 A 3...
- Q A charged particle has drift velocity of 7 5 10 4 m s and has mobility of 3 x 106 m V 1 s1 under the effect of electric field...
- Q When current comes out from positive terminal of battery energy is supplied by the battery to external circuit In this process e inside cell moves from higher potential to lower...
- Q 18 A prism is made of wire mesh with each side having equal resistance R A battery of 6 V and zero internal resistance is connected across E and F...
- Q 23 A rigid insulated wire frame in the form of a rig gled triangle ABC is set in a vertical plane as shown in the figure Two beads each of...
- Q equivalent resistance between points 4 and B in the following diagram is 20 20 20 20 202 wwwwwwwwwwwww 202 Aww Boy 20 on www w 202 20 wwwww en 40...
- Q 3 varies as where r is the distance from the 1 where r is the distance from the axis r A parallel plate capacitor is charge to certain P d...
- Q Two bulbs consume same power when operated at 200V and 300V respectively When the bulbs are connected in series across a D C source of 500V then ratio of potential...
- Q Calculate the reading of voltmeter between X and Y then Vx Vy is equal to 1F A 1 10 V 2F HH 3F X 1F 6F 20V 2 13 33V...
- Q In the circuit shown the reading of the Ammeter becomes four times of its initial value after the switch is closed Each resistor has a resistance 20 and the ideal...
- Q 57 In the circuit shown if a conducting wire connected between points A and B the current in 2006 this wire will 402 192 B c Be zero d Flow...
- Q Every atom makes one face electron in copper If 1 1 ampere current is flowing in the wire of copper having 1mm diameter then the drift velocity appox will be...
- Q Find VAR PN diode is ideal AB 1 10 V 30 V I VAB 10 Q 10 22 10 2 2 20 V
- Q When a second resistor is added as shown the 6V battery pushes charge 1 through a total resistance of 2 52 6V 202
- Q Two cells of unequal EMF E and E2 and internal resistances and 2 are joined as shown in figure V and V are the potential at P and Q respectively...
- Q 32 A ring is made of a wire having a resistance R 1202 Find the points A and B as shown in the figure at which a current carrying conductor...
- Q Four identical long solenoids A B C and D are connected to each other as shown in th figure If the magnetic field at the center of A is 3...
- Q In a portion of some large electrical network curents in certain branches are known as shown in figure 652 252 A WH 3V The value of VA Vc is O...
- Q Twelve wires each of resistance r ohms are connected in the form of a skeleton cube Find the equivalent resistance of the cube when the current enters at one corner...
- Q Example 29 a Estimate the average drift speed of conduction electrons in a copper wire of cross sectional area 1 0x107m carrying a current of 1 5 A Assume that...
- Q Current passing through cells is 2V W 11 0 40 4V ww 1 19 90 AW 1 0 4 A 2 0 2 A MW MW 6 Q 3 01A...
- Q In the following circuit Vsource 12 V and V V What is V3 1 1 Point 4 0 V 3 0 V 6 0 V 12 0 V V source...
- Q 32 Which two of the four circuits given below are identical with respect to the current through resistor X 5V 7V 2 V 1 3 12 V wwww 292 www...
- Q 59 The equivalent points O and A is 1 3 12R 13 5R C resistance of the circuit between 5R 2R B R R 5R 2 AY A R 13...
- Q In a portion of some large electrical network currents in certain branches are known The values of VA VB and Vc VD are X and Y respectively where X and...
- Q 9V The current through the A C 30 resistor is 0 5 A 40 resistor is 0 5 A 80 W 20 202 www 20 B D 202 80 wwww...
- Q done by external forces to increase their separation to 2a Two identical particles each having a charge of an electron lying 10 cm apart are released What will be their...
- Q of electron inside conductor between two consecutive collision when no potential difference exists between the ends of conductor 1 Stright line 2 Parabolic 3 Circular 4 Zig zag
- Q In the following circuit diagram an infinite series of resistances is shown Equivalent resistance between points A and B is 192 B 192 292 A infinite 192 292 122 292...
- Q SS KOTA 48 30 19 10 202 wwww 212 A fr www 202 2X Find the value of I 1 1 4 A 65 2 2 1 A 4 4...
- Q 3 1 25 V cm What is the emf of the second cell 2 1 5 Voley 4 2 25 V PO 14 A wire carries a current of 2...
- Q A circular loop has a resistance of 40 2 Two points P and Q of the loop which are one quarter of the circumference apart are connected to a 24...
- Q Kirchhoff s first law i e EI 0 at junction deals with the conservation of A charge B energy C momentum D mass
- Q Four resistances 10 10 10 22 and 15 Q2 form a Wheatstone s network What shunt is required across 15 2 resistor to balance the bridge A 10 Q2 C...
- Q 70 The current in the given circuit is 10 Q 5 V a 03 AO t 2 V 0 002 b 04 A ww 20 Q 0 0 A OB...
- Q 1 In the following diagram through 252 resistor is 202 a 92227 A 302 6V 452 b 7229 A A the current AIIMS 2018 3V
- Q The charge flowing through a resistance R varies with time t as Q at bt where a and b are positive constants The total heat produced in R is NEET...
- Q 1 A resistor of resistance R is connected to an ideal battery If the value of R is decreased then the power dissipated in the resistor will a increase c...
- Q hollow cylinder has length radius r and thickness d where r d and is made of a material with resistivity p A time varying current I flows through the cylinder...
- Q A galvanometer of resistance 95 2 shunted by a resistance of 5 2 gives deflection of 50 divisions when joined in series with resistance of 20 k2 and 2 0...
- Q A body has a negative charge of 2 C If body has 2 25 x 10 2 protons then number of electrons present in the body will be a 1...
- Q certain circuit current changes with time according to i 2 t r m s value of current between t 3 s ec will be TITO spirmsst 4s
- Q A negligibly small current is passed through a wire of length 15 m and uniform cross section 6 0 x 107 m and its resistance is measured to be 5...
- Q A resistor resistance A 400 Q B 940 is labelled 400 2 5 the true is lies between 380 2 and 420 S D 416 7 S
- Q between A and B in the situation shown is 2 R 2 R 8R 3 www wwwww A R R 6R 3 R 5 he situation shown the potential difference...
- Q 8 A step down transformer reduces the 53 6 supply voltage from 220 V to 11 V and increase the current from 6 A to 100 A 3 52 Then...
- Q OTEN It is observed in a potentiometer experiment tha no current passes through the galvanomete when the terminals of a cell are connected acro a certain length of the potentiometer...
- Q For the following circuit R R 60 02 R3 250 02 R4 325 02 R5 260 0 2 and V source 35 V What is 14 R 65 mA 37...
- Q Two batteries with emf 12 V and 13 V are connected in parallel across a load resistor of 100 The internal resistances of the two batteries are 19 and 202...
- Q 9 In the circuit shown in the figure the voltmeter reading is 6 V a 2 4 V c 4 0 V V 60 Q 40 2 b 3 4...
- Q 9 For the resistance network shown in figure choose the correct option s 292 wwwww S 10 292 492 1 1 A Current through PQ is zero C Potential at...
- Q 22 The resistors are connected as shown in the Fig 18 MT 8 Find the equivalent resistance be tween the points A and B FIGURE 18 MT 8 302 D...
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