A semicircular wire is uniformly charged with linear charge density dependent on the angle θ from y ‐direction as 
, where 
is a constant. The electric field intensity at the centre of the arc is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Lets take an element at angle θ with vertical, subtending dθ angle electric field due to this element
horizontal component 
will be cancelled out with opposite element, and 
components get added up
So 
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