IIT JAM Follow
May 30, 2020 3:09 am 30 pts
Kindly clear me these basics Q 1) why to the electric field lines between two negative charges is not possible.!!!! Q 2) why electric field can't be negative??? Q 3) what's the difference among test charge ,point charge and unit charge???
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• Himanshu Pandey
Abhishek singh
That's great! Stick to that idea only. Abandon the book where you find such mistakes!
• Himanshu Pandey
Abhishek sir regarding first question can we not draw field lines like in this fig, ?????in very few cases i found this diagram but most places it is said impossible to draw.
Abhishek singh
it's impossible to draw like that. the straight line joined is sure a typo or the Author had done a big mistake!
• Abhishek singh
3) A test charge is a positive charge of very small magnitude which gives the direction and strength of electric field in space without influencing the electric field, whereas a po...
2) Your second question should be a general one! what I mean by that? I mean this question is valid for all vector (not just electric field vector). Vectors are never positive or n...
Abhishek singh
any discussion would be appreciated!
• Abhishek singh
your first question is interesting one. it took me almost a minute to think of it (that how could I make you to understand this). Now I am sharing my thoughts with you. let say you...
Abhishek singh
• Dhairya sharma
dear I hv already attached see that.
• Dhairya sharma
answer 2.... An electric field is neither positive or negative. It is defined as being the force acting per unit positive charge . (This means it is a vector like force is). The d...
Dhairya sharma
Test charge and point charge are synonymous in the sense that both are unit positive charges. ... a point charge is the one with dimensions so much smaller than the other dimension...
• Chandra dhawan
answer 3.. Point charge: Any charge whether positive or negative, whose electric field is to be found at a particular distance(point) is called point charge. Test charge: Any char...
Chandra dhawan
Test charge and point charge are synonymous in the sense that both are unit positive charges. ... a point charge is the one with dimensions so much smaller than the other dimension...
• Chandra dhawan
answer 2.... An electric field is neither positive or negative. It is defined as being the force acting per unit positive charge . (This means it is a vector like force is). The d...