Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
Two identical balls having like charges and placed at a certain distance apart repel each other with a certain force. They are brought in contact and then moved apart to a distance equal to half their initial separation. The force of repulsion between them increases 4.5 times in comparision with the initial value. The ratio of the initial charges of the balls is
15
Sep
Two identical balls having like charges and placed at a certain distance apart repel each other with a certain force. They are brought in contact and then moved apart to a distance equal to half their initial separation. The force of repulsion between them increases 4.5 times in comparision with the initial value. The ratio [...]
Two equal negative charges -q are fixed at points ( 0, a ) and ( 0, -a ) on the y axis. A positive charge q is realesed from rest at the point (2a , 0 ) on the x axis. The charge Q will
15
Sep
Two equal negative charges -q are fixed at points ( 0, a ) and ( 0, -a ) on the y axis. A positive charge q is realesed from rest at the point (2a , 0 ) on the x axis. The charge Q will -a ) on the y axis. A positive charge q [...]
Two free point charges +q and +4q are placed a distance x apart. A third charge is so placed that all the three charges are in equilibrium. Then
15
Sep
Two free point charges +q and +4q are placed a distance x apart. A third charge is so placed that all the three charges are in equilibrium. Then Two free point charges +q and +4q are placed a distance x apart. A third charge is so placed that all the three charges are in equilibrium. [...]
If two balls of given masses and charges are released, which of the following is the correct arrangement of equilibrium ?
15
Sep
If two balls of given masses and charges are released, which of the following is the correct arrangement of equilibrium ? If two balls of given masses and charges are released which of the following is the correct arrangement of equilibrium ? September 15, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]
Figure (a) shows an arrangement of three charged particles separted by distance d. Particles A and C are fixed on the x-axis, but particle B can be moved along a circle centered on particle A. During the movement, a radial line between A and B makes an angle θ relative to the positive direction of the x-axis (Fig. b). The curves in Fig. c give, for two situations, the magnitude Fnet of the net electrostatic force on particle A due to the other particles. That net force if given as a function of angle θ and as a multiple of a basic amount F0. For example on curve 1, at θ=180∘ we see that Fnet=2F0. (a) For the situation corresponding to curve 1, what is the ratio of the charge of particle C to that of particle B (including sign)? (b) For the situation corresponding to curve 2, what is that ratio?
15
Sep
Figure (a) shows an arrangement of three charged particles separted by distance d. Particles A and C are fixed on the x-axis, but particle B can be moved along a circle centered on particle A. During the movement, a radial line between A and B makes an angle θ relative to the positive direction of [...]
In Fig. a, particle 1 (of charge q1) and particle 2 (of charge q2) are fixed in place on an x axis, 8.00 cm apart. Particle 3 (of charge q3 = +8.00 × 10^−19 C) is to be placed on the line between particles 1 and 2 so that they produce a net electrostatic force Fnet = 2 F0 on it Figure b gives the x component of that force versus the coordinate x at which particle 3 is placed. The scale of the x-axis is set by xs = 8.0 cm. What are (a) the sign of charge q1 and (b) the ratio q2 / q1?
15
Sep
In Fig. a, particle 1 (of charge q1) and particle 2 (of charge q2) are fixed in place on an x axis, 8.00 cm apart. Particle 3 (of charge q3 = +8.00 × 10^−19 C) is to be placed on the line between particles 1 and 2 so that they produce a net electrostatic force [...]
Identical isolated conducting spheres 1 and 2 have equal charges and are separated by a distance that is large compared with their diameters (Fig. 21-22a). The electrostatic force acting on sphere 2 due to sphere 1 is F. Suppose now that a third identical sphere 3, having an insulating handle and initially neutral, is touched first to sphere 1 (Fig. 21-22b), then to sphere 2 (Fig. 21-22c), and finally removed (Fig. 21-22d). The electrostatic force that now acts on sphere 2 has magnitude F. What is the ratio F’/F?
15
Sep
Identical isolated conducting spheres 1 and 2 have equal charges and are separated by a distance that is large compared with their diameters (Fig. 21-22a). The electrostatic force acting on sphere 2 due to sphere 1 is F. Suppose now that a third identical sphere 3, having an insulating handle and initially neutral, is touched [...]
If we perform these steps one by one.In which case, the leaves will converge(come closer), as compared to the previous state ?
15
Sep
If we perform these steps one by one.In which case, the leaves will converge(come closer), as compared to the previous state ? as compared to the previous state ? If we perform these steps one by one.In which case the leaves will converge(come closer) September 15, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
A leaf electroscope is a simple apparatus to detect any charge on a body. It consist of two metal leaves OA and OB, free to rotate about O. Initially both are very slighty separted. When a charged object is touched to the metal knob at the top of the conduction re, charge flows from knob to the top of the conduction rod, charge flows from knob to the leaves through the conducting rod, charge flows from knob to the leaves through the conduction rod. As the leaves are now charged similarly, they start repelling each other and tet separted (deflected by certain angle). The angle of deflection in static equilibrium is an indicator of the amount of charge on the charged boy. When a+20C rod is touched to the knob, the deflection of leaves was 5∘, and when an identical rod of −40C is touched, the deflection was found to be 9∘. If an identical rod of +30 C is touched, then the deflection may be:
15
Sep
A leaf electroscope is a simple apparatus to detect any charge on a body. It consist of two metal leaves OA and OB, free to rotate about O. Initially both are very slighty separted. When a charged object is touched to the metal knob at the top of the conduction re, charge flows from knob [...]
When a positively charged sphere is brought near a metallic sphere, it is observed that a force of attraction exists between the two. It means :
15
Sep
When a positively charged sphere is brought near a metallic sphere, it is observed that a force of attraction exists between the two. It means : it is observed that a force of attraction exists between the two. It means : When a positively charged sphere is brought near a metallic sphere September 15, 2020 [...]