Given graph shows electric field intensity due to a point charge (E) at a distance (x) from it.
Here graphs(A,B,C,D) corresponding to four charges are shown. Which graph represents the charge of higher magnitude?
A
A
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B
B
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C
C
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D
D
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Solution
The correct option is DD From the definition of intensity of electric field,
E=kQr2
So, if r is constant.
E∝Q.....(1)
For the given curves, at x=r0, we can see that,
ED>EC>EB>EA
and from eq. (1)
⇒QD>QC>QB>QA
Hence, curve D represent E−x curve of charge having bigger magnitude.