Electric charge is uniformly distributed along a long straight wire of radius 1 mm. The charge per centimeter length of the wire is Q coulomb. Another cylindrical surface of radius 50 cm and length 1 m symmetrically encloses the wire as shown in the figure. The total electric flux passing through the cylindrical surface is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Charge enclosed by cylindrical surface (length 100 cm) is 
. By applying Gauss's law,
The lines are parallel to the surface.
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