Physics question and answers for January 23, 2024
- Q Let P r r be the charge density distribution for a TRA solid sphere of radius R and total charge Q For a point p inside the sphere at distance...
- Q A charge q is placed at each of the points x x0 x 3x0 x 5x0 upto on the x axis and a charge q is placed at each of...
- Q Position 1 2 3 4 5 6 Battery 900 Voltage V 9 2 3 w 200mA 9V m 20mA Current mA 20 200 140 3V 2V 140mA Resistance Ohm 90
- Q 2 Example 1 14 Two identical helium filled balloons A and B fastened to a weight of 5 g by threads floats in equilibrium as shown in figure Calculate the...
- Q A block of mass m and charge q is connected to a point O with help of an inextensible string The system is on a horizontal table An electric field...
- Q H A charged Q is uniformly distributed over a thin rod AB of length L as shown in the figure The electric potential at the point O lying at distance...
- Q 5 In x y coordinate system a particle P of charge q and mass m enters first quadrant close to x 0 as shown in figure In this region potential...
- Q A hemisphere of radius R as shown in figure is uniformly charged with a surface charge density o The electric field at the centre C is 1 3 0 6...
- Q A metal sphere of mass 20 g carrying a positive charge of 10 C is hung by a thread from a rigid support Teh charged sphere is now immersed in...
- Q 21 The equivalent resistance between points A and B is 1 3 3R 2 2R 3 A R R R ww ww www R R B 2 2R 4 3R
- Q 1 Find the value of emf s when Ammeter read 3 A current flowing through it A 1 12 volt 3 12 volt R 3Q2 www 12V E R 692...
- Q When charge of 3 coulomb is placed in Uniform electric field it experiences a force 3000 newton within this field potent difference between two points separated by distance of 1...
- Q Three infinitely long charge sheets are placed as shown in figure The electric field at point P is a 20 O 20 0 b Z 4 O 20 k k...
- Q 37 A thick shell with inner radius R and outer radius 3R has uniform density p c m It has a spherical cavity of radius R as shown in the...
- Q 1 A total charge Q is broken into two parts Q and Q placed at a distance R The maximum repulsion occurs when 4Q 2 Q Q 200 3 2Q...
- Q A hollow charged metal sphere has radius r It the potential difference between its surface and a point at distance 3r from the centre is V then the electric field...
- Q Dark the circle in Rough work must not be done on the Answer sheet and do Answer sheet Each question carries 4 marks For every wrong response ose the correct...
- Q An isolated solid metal sphere of is given an electric charge The variation of the intensity of the electric field with the distance r from the centre of the sphere...
- Q A 6 volt battery of negligible internal resista resistance is connected across a uniform wire AB of length 100cm The positive terminal of another battery of emfAV and internal resistance...
- Q 3 37 Two identical small conducting spheres A and B have charges 1 mC and 3 mC on them and they attract each other with a force F Two other...
- Q e 3x10 Two fixed charges A and B of 5 C each are separated by a distance of 6 m C is the mid point of the line joining A...
- Q 24 A rod is bent into a semi circular arc of radius R The rod has a uniform linear charge distribution 2 The potential at the centre of the arc...
- Q A fixed ring of radius R is having uniformly distributed charge Q over its circumference A charge q of opposite nature and mass m is kept on its axis at...
- Q In a region of space suppose there exists If a positive uniform electric field E 10i V m charge moves with a velocity 2 potential energy 1 Increases 2 Decreases...
- Q Figure shows a hemispherical shell of mass M and radius R and a concentric shell of mass m and radius 3R 4 A the mutual gravitational potential energy of the...
- Q PRACTICE PROBLEMS Two identical anions are placed 7 x 10 10 m apart and each o experiences a force of 4 x 10 N Calculate the charge present on each
- Q configuration and a spherical Gaussian surface as shown in the figure while calculating the flux of the electric field over the spherical surface the electric field will be due to...
- Q What is the angle between the electric dipole moment and the electric field due to itself on the equatorial line 1 0 3 180 2 90 4 None of these...
- Q 16 Two charges q1 at the origin and q2 4q1 at x 198 m What is the coordinate of point P meters between the two charges on the x axis...
- Q Two identical charged particles each carrying charge q 0 1 mC and of mass m 10 mg are projected along two parallel lines separated by a distance with equal speed...
- Q of the electric field strength in the metry plane of this system located between the threads 3 23 An infinitely long cylindrical surface of circular cross section is uniformly charged...
- Q Along the x axis three charges x 0 x a and x 2a respectively The resultant electric potential at a point P located at a distance a r from the...
- Q 28 Calculate the electrostatic force and gravitational force between the proton and the m The electron in a hydrogen atom They are separated by a distance of 5 3 x...
- Q 43 As shown in the figure charges q and q are placed at the vertices B and C of an isosceles triangle The potential at the vertex A is a...
- Q 3 An electric dipole of length 2 cm when placed with its axis making an angle of 60 with a uniform electric field experiences a torque of 8 3 N...
- Q An observer is at distance r metre from isotropic point light source whose power is H watt The r m s value of electric field at the position of observer...
- Q experien 2 Two electrons are placed at a distance d such that electrostatic force between both the electrons is equal to sum of weight of both the electrons Calculate the...
- Q led with two layers of different materials and B as shown in the figure on the next page The material A has lectric constant k and conductivity o and the...
- Q A battery of electro motive force E is connected in series with resistance R and a voltmeter An ammeter is connected in parallel with the battery 1 neither the ammeter...
- Q 1 0 4 L 2 0 5 L A small sphere with mass 1 2 g hangs by thread between two parallel vertical plates 5 00 c The plates are...
- Q 33 Force of interaction between two small dipoles at axial positions of each other is directly proportional to rn where r is distance between the center of dipoles Value of...
- Q 26 The length of second s hand in watch is 1 cm The chang in velocity of its tip in 15 seconds is a Zero b c T 30 cm...
- Q the net charge on the object Two spherical balls of the same radius carry charges 0 4 C and 0 9 C Calculate the number of electrons to be transferred...
- Q Two metal spheres one of radius R and the other of radius 2R respectively have the same surface charge density o They are brought in contact and separated What will...
- Q A dipole of dipole moment P is kept at 60 in a non uniform electric field The electri field at the top charge is E and at the bottom is...
- Q Two charges q m and q a massless rod of length of uniform electric field as shown q 1 60 q and released in a region Find the maximum speed...
- Q 44 Two point charges q and q of 10 C and 10 C respectively are placed 0 1 m apart 0 1 m 01m 0 05 m 0 05 m...
- Q 28 Two small identical spheres having Q and Q charge are kept at a certain distance F force acts between the two If in the middle of two spheres another...
- Q 11 A Two balls A and B of same mass M and charges Q Q are suspended by two strings of same length from two different suspension points S and...
- Q 5 It is possible that any some constant value of emf but the potential difference between the plates is zero a Not possible b Yes if another identical battery is...
- Q 10 A hollow conducting sphere is placed in an electric field produced by a point charge at P as shown in the figure Let VA and VB be the electrostatic...
- Q 17 Three large non conducting plane sheets of charge with charge densities o 20 and 3o are arranged as shown The net electric field in region III will be 111...
- Q particle of mass m and charge te is projected with velocity v towards a much more massive particle of charge Ze where Z 0 What is the closest possible distance...
- Q 10 Figure shows two equipotential lines in the xy plane for an electric field The scales are marked The x component and y component of the field in the space...
- Q 3 The rms value of potential difference V shown in the figure is V 1 2017 05 N o5 2 3 V T 2 T
- Q dz Figure 31 E12 figure A potential difference V is applied between the points a and b An electron is projected between the plates of the upper capacitor along the...
- Q 6 A positively charged small disc is released on the top of fixed hemispherical frictionless dome in presence of a uniform horizontal electric field If the disc leaves the dome...
- Q 14 1 2 3 A thin disc of radius b 2a has a concentric hole of radius a in it see figure It carries uniform surface charge o on it...
- Q form line of charge with length 20 0 cm is along the z axis with dpoint at x 0 Its charge per length is 6 30 nC m A small...
- Q 3 0 2A Thinking 18 marks c www Position 1 2 3 4 5 6 7 8 Battery 4 4V M A 2 501 ww 1 7V Voltage V 7...
- Q Water from a tap maintained at a constant potential V is allowed to fall by drops of radius r through a small hole into a hollow conducting sphere of radius...
- Q k 9 00 x 10 Nm2 C e 1 60 x 10 19 C 1 In the figure at the right four charges are located at the corners of a...
- Q 51 A thin film soap bubble of radius R is given a uniform negative charge Q The radius R 1 Becomes 3 Decreases Ka R 2 2 Increases 4 Becomes...
- Q A non conducting ring of radius 0 5 m carries a total charge of 1 11 x 10 10 C distributed non uniformly on its circumference producing an electric field...
- Q Vo lo k V R 5 00 R8 15 02 R 120 V R3 8 002 V3 13 R 6 0 V Rs 14 02 Vs Is
- Q Application 28 marks a 24V Position 1 2 3 4 5 6 Battery 402 Voltage V 24 202 302 60 Current Amp 892 402 Resistance Ohm 2 3 4 6...
- Q Explain in words how each of these 2 electrons will feel the same electrostatic force in the following situation e
- Q What is the potential difference between y 4cm and yy 4cm in the uniform electric field E 20 0007 25 000 V m Express your answer as an integer and...
- Q Two small oppositely charged spheres X and Y are fixed in position as shown and have charges of 40 C and 40 C respectively Determine the magnitude and direction of...
- Q 7 Point charges W X Y and Z each have the same magnitude charge of 6 56 x 106 C Two of the charges are positive as shown and two...
- Q m A point particle of charge q 4 5 x 10 6 C is placed on the x axis at x 10 cm A second particle of charge q2 is...
- Q 3 What is the source of all magnetic fields an isolated magnetic pole moving electric charges charged particles that do not move
- Q The main difference between gravitational and electric forces is that electric forces Select one attract or repel Ob attract C are weaker d obey the inverse square law e act...
- Q by occurs when objects are charged without touching
- Q 4 The electrostatic force between two point charges is 4 7x10 N If the distance between them is tripled the charge of one of the points triples and the charge...
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