Physics question and answers for December 23, 2023
- Q 53 The equivalent resistance between A and B for the circult shown in figure is a 13 12 b 15 12 c 17 12 d 19 12 492 502 D...
- Q 9 Five equal resistances of 10 22 are connected between A and B as shown in figure The resultant resistance is A 102 www 10 52 ww a 102 b...
- Q a 100 30 The resistance of wire in a heater at room temperature is 65 2 When the heater is connected to a 220 V supply the current settles after...
- Q 1 Two 2 2 resistances are connected in parallel in circuit X and in series in circuit Y The batteries in the two circuits are identical and have zero internal...
- Q ELECTRICAL ENERGY POWER 35 A boy has two spare light bulbs in his drawer One is marked 240 Vand 100 W and the other is marked 240 V and 60...
- Q View In English A potential difference of 220 V is maintained across a 12000 02 rheostat as shown in the figure The voltmoter V has resistance of 8000 0 and...
- Q a c 1020 2 C The resistance of the wire in the platinum resistance thermometer at ice point is 5 2 and at steam point is 5 25 2 When...
- Q If voltage across a bulb rated 220 V 100 W drops by 2 5 of its rated value the percentage of the rated value by which the power would decrease...
- Q 1 In the circuits shown below the readings of the voltmeters and the ammeters will be 1092 wwww V 10 V Circuit 1 A 1 V V and i 12...
- Q 4 Four conductors of resistance 162 each are connected to form a square The equivalent resistance across two adjacent corners is in ohm 1 6 2 18 3 12 4...
- Q the time a 40 C b 48 C c 38 C d 43 C 5 In an atom electrons revolves around the nucleus along a path of radius 0 72...
- Q B TH AL 4xsord KET 13 A series combination of an incandescent lamp an inductor and a capacitor is connected across an alternating voltage source Two switches A and B...
- Q dry a 10 2 26 Two copper wires of length 1 and 2 have radii rand 2r respectively What is the ratio of their specific c 1 1 d 1...
- Q c 45 5 C The current in a wire varies with time according to the equation I 4 2 t where I is in ampere and t is in second...
- Q c T T d I 1 2 A wire of resistance 42 is used to wind a coil of radius 7 cm The wire has a diameter of 1 4...
- Q 26 Thousand cells of same emf E and same internal resistance r are connected in series in same order without an external resistance The potential drop across 399 cells is...
- Q Consider the infinitely long chain of resistors shown below a R R R www R www R R w R R R R b How much electrical power is dissipated...
- Q Two electric bulbs rated P watt V volts and P2 watt V volts are connected in parallel and V volts are applied to it The total power will be Question...
- Q 1 Using the principle of superposition find the current flowing through the 12 ko resistor connected between the terminals a and b of the below given circuit 5 A a...
- Q In the given branch PQ of a circuit a current 2t 3 A is flowing where t is time in second Then the value of potential difference Vp Vo at...
- Q a 1 A particle of charge 3 x 10 19 C is situated in uniform electric field directed to the left In moving to the right a distance of 0...
- Q n the given circuit capacitor is initially uncharged and stwitch S is closed at time 0 Ratio of current passing through battery just after closing switch S and after a...
- Q 12 A point source ca metal plate Which of the following curves may represent the saturation photocurrent as a function of the distance between the source and the metal current...
- Q A M Puz S B R Diagram shows a meterbridge wire AB has uniform cross sectional area and length L M is mid point of wire AB Resistivity of wire...
- Q 4 0 Consider the following circuit Battery is ideal Choose current statement s Current passing through all three resistors is same Current passing through battery is 4 Amperes Potential difference...
- Q 1 2 3 4 rect Answer 3 Answer 4 us incorrect Thermo couple Radiator Resistor Generator add to Bookmark List Feel statt 5 Onattempted 10 7 Correct 09 0 incorrect...
- Q Find The amount of charge that flows through the switch S in C Assume the capacitors are uncharged before connecting in the circuit 4 F 2 F 50 V S...
- Q Consider the circuit shown in the diagram Current passing through wire AB is 6 ampere Potential difference across two batteries is different O Potential difference across two batteries is same...
- Q atsApp Image 2021 04 16 at 10 2554 AM jpeg 252 11 Find the currents in the different resistors shown in figure 32 W5 202 2V O 402 2 2VT...
- Q 70 For what value of the length the deflection in the galvanometer will be zero in the following potentiometer arrangement The length of the wire AB is 4 m and...
- Q 4 70 F capacitor that is initially uncharged is onnected in series with a 5 00 k2 resistor and an emf source with E 150 V negligible internal esistance Part...
- Q Source O Bulb In the figure a bulb of 25W is used The power dissipated in the wires connecting the bulb to source is 2mW If a bulb of 100W...
- Q c 2 4 x 10 9 26 The electrostatic attracting force on a small sphered charge 0 2 C due to another small sphere of charge 0 4 C in...
- Q 5 AB is a uniform wire of length 70 cm and resistance 702 Part AC is 20 cm long Two resistors and two idea cells are connected as shown A...
- Q The network of resistance connected across the cell shown in the diagram is infinitely long The cell is ideal 6V 10 252 12 m 202 w 10 2025 10 4...
- Q c 9 6 x 10 2 d 3 75 x 10 2 2 If 10 electrons move out of a body to another body every second then the time required...
- Q 11 A polythene piece rubbed with wool is found to have a negative charge of 6 x 10 7 C The number of electrons transferred to polythene from wool is...
- Q 4 9 A I and mass m is placed along the east west line on a table Suddenly a certain amount of charge is passed through it and it is...
- Q 22 Figure shows rough sketch of meter bridge Galvanometer G deflects zero at length cm Now R and R are interchanged then balancing length increases by 25 cm The ratio...
- Q S resistors each of resistance R are connected as shown in the figure R D C A R R www 1170 R The equivalent resistance between A and C is...
- Q 24 For the circuit given below the Kirchoff s loop rule fort he loop BCDEB is given by the equation Ai B 1 C E R wwwwww R www F...
- Q Example 3 38 In the circuit shown in figure E 10V E 4V 1 1 2 122 and R 202 Find the potential difference across battery 1 and battery E...
- Q In the circuit shown determine the equivalent resistance total current and power in each resistor if the supply voltage between terminals A and B is 440 Volts A 400 52...
- Q Three resistances 102 202 and 302 are connected in parallel The ratio of current passing through them when a p d is applied across thhe ends is 1 2 3...
- Q For a ccell the graph between the p d v across the terminals of the cells and the current I drawn from the cell as shown The emf annd internall...
- Q A circuit involving five ideal cells three resistance R R and 2002 and a capacitor of capacitance C 1 F is shown Match the conditions in Column l with results...
- Q An electric bell has a resistance of 552 and requires a current of 0 25 A to work it Assuming that the resistance of the bell wire is 192 per...
- Q Two cells of emf 1V 2V and each of internal resistance1 are connected in parallel with their unlike terminals connected together to form a battery A resistance of 1 5...
- Q Q 2 Study the circuit shown in which three identical bulbs B B and B are connected in parallel with a battery of 4 5 V a What will happen...
- Q A certain solar cell type has an output capability of 0 5 Amp at 0 9 V A series parallel solar array has been designed of such cells with 166...
- Q 64 Two identical heaters marked 1000W 250V are placed in series with each other and with a supply of 250 volt Their combined rate of heating assuming their resistances stay...
- Q E 5 An electric bell has a resistance of 50 and requires a current of 0 25 A to work it Assuming that th resistance of the bell wire is...
- Q CE The equivalent resistance between the terminal points A and B in the network shown in figure A 7R B 5R R R R R ww R ww R ww...
- Q A 3 V DC supply with an internal resistance of supplies a passive non linear resistance characterized by the relation VNL 1 2 NL The power dissipated in the non...
- Q A 10 volt battery with internal resistance 202 is connected in a circuit shown in the diagram Choose CORRECT statement s 152 10volt 1 22 U If power dissipated in...
- Q Two magnetically uncoupled inductive coils have Q factors 9 and 92 at the chosen operating frequency Their respective resistances are R and R When connected in series their effective Q...
- Q If a resistance R is connected in parallel with resistance R in circuit then possible value of current through R and value of R is 1 24 2R R www...
- Q A galvanometer resistance R together with an unknown resistance r in series is connected across two identical batteries each of 1 5V When the batteries are connected in series the...
- Q 15 Two identical cells each of emf E and each of internal resistance r are connected in series with an external resistance R then power P became maximum across R...
- Q 2 If two bulbs 60 W 250 V and 120 W 250 connected in parallel across a 400 V Then of the following option is correct 1 60 W bulb...
- Q In the circuit diagram The current through 10 ohm is 1 25 A The current through 5 ohm is 2 5 A The current through 50 is 1 25 A...
- Q A circuit consists of eight batteries each having an emf of 1 5 V and an internal resistance of 0 25 92 connected in series as shown What would be...
- Q 50 23 Figure shows a potentiometer circuit for comparison of two resistances The balance point with a standard resistor R 10 0 2 is found to be 58 3 cm...
- Q The potential difference applied to an X ray tube is 5kV and the current through it is 3 2 mA Then the number of electrons striking the target per second...
- Q 5 20 25 30 4 35 39 40 44 45 49 50 3 54 55 58 59 60 Multiple Choice Select 1 out of 4 options for the question below...
- Q A straight hollow cylindrical conductor of length inner radius r and outer radius a has resistivity where r is distance from it s axis If both ends of conductor are...
- Q 10 The Wheatstone s network is shown in the figure If the key K is closed then the galvanometer will lsd Jon Iliw www P 20 92 ww R 20...
- Q 0 A wire of resistance 4 Q2 is used to wind a coil of radius 7 cm The wire has a diameter of 1 4 mm and the specific resistance...
- Q 2 21 1 5 2 1 5 3 1 5 4 5 For hydrogen gas cp c a and for a oxygen gas Cp C b then the relation between...
- Q Q A copper wire of uniform cross sectional area 3 x 10 6 m carries current 15 A Find the draft speed of electrons in the wire Assume that each...
- Q 1 The current density varies with radial distance 1 as J ar in a cylindrical wire of radius R The current passing through the wire between radia distance R 3...
- Q Q10 A 50 resistor is connected to a battery The battery s emf is 50V and it has an internal resistance of 50 What is the voltage across the 50...
- Q Question 3 7 marks A coaxial cable is made up of two conductors one which has an inner radius of 1 5 cm and one which has an outer radius...
- Q For different values of resistance R powe consumptions in R are given Then which of the following values are not possible F 4 V ww R a 2 W b...
- Q In the circuit shown below if the source voltage Vs 100253 13 V then the Thevenin s equivalent voltage in Volts as seen by the load resistance R is Vs...
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