One metallic sphere A is given positive charge whereas another identical metallic sphere B of exactly same mass as of A is given equal amount of negative charge. Then,
ElectroStats

Quiz
•
Physics
•
11th Grade
•
Hard

Physics Wallah
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Mass of A and mass of B still remain equal
Mass of A increases
Mass of B decreases
Mass of B increases
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Two point charges A and B, having charges +Q and –Q respectively, are placed at certain distance apart and force acting between them is F. If 25% charge of A is transferred to B, then force between the charges become
9F/16
16F/9
4F/3
F
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Two identical charged spheres suspended from a common point by two massless strings of lengths l, are initially at a distance d (d << l) apart because of their mutual repulsion. The charges begin to leak from both the spheres at a constant rate. As a result, the spheres approach each other with a velocity v. Then, v varies as a faction of the distance x between the sphere, as
A
B
C
D
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Two positive ions, each carrying a charge q, are separated by a distance d. If F is the force of repulsion between the ions, the number of electrons missing from each ion will be (e being the charge on an electron)
A
B
C
D
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Read the Question In Image and mark A/B/C/D as given against each option
A
B
C
D
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A charge q is placed at the centre of the line joining two exactly equal positive charges Q. The system of three charges will be in equilibrium, if q is equal to
– Q/4
+Q
–Q
Q/2
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
An electric dipole, consisting of two opposite charges of 2×10^(-6) C each separated by a distance 3 cm is placed in an electric field of 2×10^5 N/C. Torque on the dipole is
12 × 10–1 N-m
12 × 10–2 N-m
12 × 10–3 N-m
12 × 10–4 N-m
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