5 Mark Questions

1. (1) The electric field  due to a point change at any point near to it is defined as:
 where q is the test charge and  is the force acting on it. What is the significance of lim  in this expression?

(2) Two charges each but opposite in sign forms a system. These charges are located at points A (0,0, -10) cm and B (0,0, +10) cm respectively. What is the total charge and electric dipole moment of the system?

electric charge and field

2. (a) Sketch electric lines of force due to (i) isolated positive change (ie q>0) and (ii) isolated negative change (ie q<0)

(b) Two point changes q and –q are placed at a distance 2a apart. Calculate the electric field at a point P situated at a distance r along the perpendicular bisector of the line joining the charges. What is the field when r >> a?

Ans.

electric charge and field
electric charge and field
electric charge and field
electric charge and field
electric charge and field
Important Question of Electric Charge fields
Important Question

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Chapter 1: Electric Charges Fields

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