A circle of radius a has charge density given by: λ = λ 0 cos 2 θ on its circumference. What will be the total charge on the circle? (λ 0 → constant)
Text Solution
Verified by ExpertsThe correct answer is:
C
Charge density Let PQ be an element of length dl on the circumference of the circle which makes an angle dθ at the center of the circle.
Then the charge on the element is
Then from Eq. (i)
The total charge on the circle [ on integrating Eq. (ii) with limit 0 to 
]
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