Basics first!
A uniform electric field of 3 0 N/C exists along the x -axis. Calculate the potential difference V B − V A between the point A = ( 4 m , 2 m ) and B = ( 1 0 m , 5 m ) .
The answer is -180.
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1 solution
sir why have you taken it as -E
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from where do you get that question...??
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Looked it up online.
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@Achal Jain – at where and from where do you study such type of formulas
i solved it with an easy method...!!!
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@Deepansh Jindal – Tell that to me too! Plz
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@Achal Jain – i thought that the potential at origin is x so potential at A = x-120 (s it is decreasing at 30V/C) and that at B is X -300. so Vb-Va = X-300-(X-120)
which gives us -180V
In this question y coordinates are not considered as they will all be equipotential as electric field is along x axis ... hope it might be correct...
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@Deepansh Jindal – Claps! Clasps!
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@Achal Jain – is it incorrect????
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@Deepansh Jindal – @achal jain l sir please correct if i am wrong...???
This is because E = − d r d V .
Δ V = − E x Δ x = − 3 0 × ( 1 0 − 4 ) = − 1 8 0