Physics question and answers for December 21, 2023
- Q Q 86 In the circuit shown switch S is kept closed and the circuit is in steady state a Find reading of the ideal voltmeter b Now the switch is...
- Q 37 In the network of five resistors what should be the value of v such that effective resistances between points y a and b does not change 1 x only...
- Q figure shown what is the potential difference between the points A and B and between B and C respectively in steady state 3 F 16 3 F 20 2 www...
- Q average current does this rotating charge represent A 2 ampere current flows in a uniform conductor which has 1 x 1024 free electrons per metre What is th average drift...
- Q To study the dependence of current I on the potential difference V across a resistor R two students used the two set ups shown in the figure A and B...
- Q 4 nR 20 The electric resistance of a certain wire of iron is R If its length and radius are both doubled then 1 The resistance will be doubled and...
- Q When a piece of aluminium wire of finite length is drawn through a series of dies to reduce its diameter to half its original value its resistance will becomes 1...
- Q 2 A capacitor and a coil in series are connected to a 6 volt ac source By varying the frequency of the source maximum current of 600 mA is observed...
- Q 50 Calculate the net resistance between A and B R R 1 3 3R 4 4R 7 A www R R R www R www R R R 2 R...
- Q Two identical capacitors are connected in the circuit shown C is charged to 100 V and switch S is shifted from position 1 to position 2 The negative terminal of...
- Q D The electron of a hydrogen atom revolves round the proton in a circular nth orbit of radius 2 r on h me with a speed v n 2 a...
- Q Consider the four circuits shown in the figure below In which circuit power dissipated maximum Neglect the internal resistance of the power supply 1 E FI R www R www...
- Q For different values of resistance R power consumptions in Rare given Then which of the following values are not possible a 2 W c 8 W 1 Only c 3...
- Q The voltage drop across a forward biased diode is 0 7 V In the following circuit the voltages across the 10 ohm resistance in series with the diode and 20...
- Q A dielectric slab with 500 mm x 500 mm cross section is 0 4 m long The slab is subjected to a uniform electric field of E 6ax 8ay kV...
- Q 36 A galvanometer of resistance RG is to be converted into an ammeter with the help of a shunt of resistance R If the ratio of the heat dissipated through...
- Q 22 A conductor with rectangular cross section has as shown in figure dimensions a x 2a 4a Resistance across AB is x across CD is y and across EF is...
- Q 3 a 22 B b Calculate og 4 46 Find equivalent resistance between A and D 12 182 182 292 ww ww E b 32 www A c R 20...
- Q c JE d None of these 17 The variation of current I and voltage V V across a resistance R is as shown in figure The variation of power P...
- Q a 30 Q b 40 C 15 Power generated across a uniform wire connected across a supply is H If the wire is cut into n equal parts and all...
- Q a Someone watches TV on average 6 hours each day The TV is connected to a 220 Volt voltage so that the electric current flow through the TV is 0...
- Q A galvanometer can be used as a voltmeter by connecting a Question Type Single Correct Type 1 High resistance in series 2 Low resistance in series 3 High resistance in...
- Q The diagram below in fig shows a cell of emf 2 volt and internal resistance r 1 ohm to an external resistance R 4 ohm The ammeter A measure the...
- Q A resistor is connected across a 15 V source What is the current in the resistor if the color code of the resistor is red orange orange silver A 110...
- Q Three 150 W 220V bulbs are connected first in parallel and then in series Each time the combination is connected to a 220 V supply The power drawn by the...
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