The electric field in a region of space is given by, E → = E 0 i ^ + 2 E 0 j ^ where E 0 = 100  …

The electric field in a region of space is given by, E=E0i^+2E0j^ where E0=100 N C-1. The flux of this field through a circular surface of radius 0.02 m parallel to the YZ plane is nearly
  1. 0.02 N m2 C-1
  2. 0.005 N m2 C-1
  3. 0.125 N m2 C-1
  4. 3.14 N m2 C-1

Solution

ϕ=E·A=E0i^+2E0j^·πr2i^

=E0πr2=0.125 N m2 C-1

Asked in: JEE Main 2014 (19 Apr Online)

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