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2. A particle of charge Q1 = 2μc is placed at the origin, an identical particle of charge Q2, is placed 2m from the origin on the +x-axis, and a third identical particle of charge Q3, is placed 2m from the origin on the +y-axis.
Calculate:
i. The net electrostatic force on Q1 ii. The net electric field on Q2 iii. The net electric potential on Q3
1. There are three identical metal spheres A, B, and C. Sphere A carries a charge of +5q, sphere B carries a charge of -q and Sphere C carries a net charge. A and B touched together and separated. Sphere C is then touched to Sphere A and separated from it. Finally, Sphere C is then touched to Sphere B and separated from it.
i. What is the net charges on the three spheres after they have touched.
ii. How many charges end up on sphere C.
How are the angles of refracted of light affected when light passes from less dense to a denser medium?
Derive the equation of
A)Q(t) for discharging process
B)V(t) for discharging process
C)I(t) for discharging process
D)show discharging graph
E)what happen for Q(t) for t=goes to +ve infinity for discharging process.
Suppose in an experiment, data is collected of the variation of current with
resistance R. Next a plot of R vs I
-1 is made. How does one determine the
value of V from that graph? (Explain your answer using an appropriate
expression.)
The vectors field are specified as:
F = −12ax +5ay −10az
and G = 6ax +5ay −2az
Determine:
(a) The unit vector in the direction of −F + 3G
(b) The magnitude of 5ax + G − 2F
(c) |2F| |3G| (F+ G)
(d) The cross product between F and G
The vectors field are specified as:
F = −12ax +5ay −10az
and G = 6ax +5ay −2az
Determine:
(a) The unit vector in the direction of −F + 3G
(b) The magnitude of 5ax + G − 2F
(c) |2F| |3G| (F+ G)
(d) The cross product between F and G
A multilayer coil of 2000 turns of fine wire is 20 mm long and has a thickness 5 mm of winding. If the coil carries a current of 5 mA, the mmf generated is (a) 10 A . t (c) 2000 A .t (b) 500 A . t (d) None of the above Answers
Which of these formulas is wrong? (a) B1n = B2n (b) B2 = "B2n 2 1 B2t 2 (c) H1 = H1n + H1t (d) an21 * (H1 - H2 )= K, where an21 is a unit vector normal to the interface and directed from region 2 to region 1.
Identify the statement that is not true of ferromagnetic materials. (a) They have a large xm. (b) They have a fixed value of mr. (c) Energy loss is proportional to the area of the hysteresis loop. (d) They lose their nonlinearity property above the curie temperature.
