10. The figure below shows the electric field lines around three charges A, B and C.
a) Which charge is positive?
b) Which charge has the largest magnitude? Why?
c) In which region or regions of the figure could the electric field be Zero?
i)near A ii) near B iii)near C iv) nowhere. Justify your answer.
Answers
Answer:
- The number of lines originating or terminating on a charge is proportional to the magnitude of charge. In the following figure electric lines of force are originating from A and terminating at B, hence QA is positive while QB is negative. Also number of electric lines at force linked with QA are more than those linked with QB, hence |QA| > |QB|.
- The electric lines of forces always starts from a positive charge and ends at a negative charge. In case of a single isolated charge, electric lines of force start from positive charge ends at infinity. There is no neutral point between unlike charges. Point between two
like charges where electrostatic force is zero is called neutral point. A neutral point may exist between two like charges. Also between two like charges the neutral point is closer to the charge with smaller magnitude.
(i) Here, in the figure, the electric lines of force starts from A and C.Therefore, charges A and C must be positive.
(ii) The number of electric lines of forces starting from charge C are maximum, so C must have the largest magnitude.
(iii) From the figure we see that a neutral point exists between charges A and C. Here, more number of electric lines of forces shows higher strength of charge C than A.
Thus, electric field is zero near charge A hence neutral point lies near A.
Explanation:
please mark me as braienliest....
I follow you....
see me in your followers list...