Fist four questions answer Q1. Suppose a charge +Q1 is given to the positive plate and a charge –Q2 to the negative plate of a capacitor. What is the "charge on the capacitor"? Q2. As C = 1VQ, can you say that the capacitnace C is proportional to the charge Q? Q3. A hollow metal sphere and a solid metal sphere of equal radii are given equal charges. Which of the two will have higher potential? Q4. The plates of a parallel-plate capacitror are given equal positve charges. What will be the potential difference between the plates? What will be the charges on the facing surfaces and one the outer surfaces?
12. (AIPMT 2007, AIIMS 2008) A hollow cylinder has a charge q C within it.
6. A test charge q is moved without accelerating From A to C along the path from A to B & B to C in electric field.
(ii) At what point of the two is electric potential more & why?
Two thin conducting shells of radii R and 3 R are shown in the figure. The outer shell carries a charge + Q and the inner shell is neutral. The inner shell is earthed with the help of a switch S. Based on the information, which of the following statements are correct?
Q. If the potential at the centre of a uniformly charged hollow sphere of radius R is V then electric field at a distance r from the centre of sphere will be (r > R)
Q.14. Specific rotation of sugar solution is 0.01 SI units. 200 kg of impure sugar solution is taken in a polarimeter tube of length 0.25 m and an optical rotation of 0.4 rad is observed. The percentage of purity of sugar in the sample is .............
1) 80 %
2) 89 %
3) 11 %
4) 20 %
5. Oxygen is 16 times heavier then hydrogen. Equal volumes of hydrogen and oxygen are mixed. The ratio of speed of sound in the mixture to that in hydrogen is .........
Fist four questions answer
Q1. Suppose a charge +Q1 is given to the positive plate and a charge –Q2 to the negative plate of a capacitor. What is the "charge on the capacitor"?
Q2. As C = , can you say that the capacitnace C is proportional to the charge Q?
Q3. A hollow metal sphere and a solid metal sphere of equal radii are given equal charges. Which of the two will have higher potential?
Q4. The plates of a parallel-plate capacitror are given equal positve charges. What will be the potential difference between the plates? What will be the charges on the facing surfaces and one the outer surfaces?
Q 1) Consider thetwo charges of magnitude + 3Q and - 3Q placed at the points (0, 0) and (1, 1). find the locus of the points where the potential due the system is zero.
A) x2+y2=1
B) x2+y2=4
C) x+y=1
D) d+y=0
1). > 0
2). < 0
(a) R
(b) R/2
(c) R/3
(d) 2R
(a) 8 V
(b) - 12 V
(c) - 8 V
(d) 12 V