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Class XII Physics Electrostatics 5
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Question 1
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)
Question 2
Four point charges –Q, -q, 2q and 2Q are placed, one at each corner of the square. The relation between Q and q for which the potential at the center of the square is zero, is
Question 3
The direction of electric intensity at a point in an electric field is the direction of the net force on a
Question 4
In paper and cotton industries, the atmosphere is kept moist. This is to
Question 5
When a piece of polythene is rubbed with wool, a charge of 2.72 × 10–7 C is transferred from wool to polythene. What is the amount of mass, which is transferred to polythene?
Question 6
An electron is released from rest in a region of space with a non-zero electric field. Which of the following statements is true?
Question 7
Charges +q and –q are placed at points A and B, respectively; which are at a distance 2L apart, C is the midpoint between A and B. The work done in moving a charge +q along the semicircle CRD is :
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` Question 8
A metallic solid sphere is placed in a uniform electric field. The lines of force follow the path(s) shown in figure as
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Aug 1NEET & AIIMS
