Questions
A ring of charge with radius 0.5 m has 0.002 m gap. If the ring carries a charge of +1 C, the electric field at the centre is
detailed solution
Correct option is B
Q2πr=dqdl dq=Q2πr.dl=12π x 0.5=0.02π1=21000 E=14πε0dqr2⇒9 x 109 x 2 x 10-3122E = 7.2 × 107 N/CTalk to our academic expert!
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A thin copper ring of radius ‘a’ is charged with q units of electricity. An electron is placed at the centre of the copper ring. If the electron is displaced a little, it will have frequency.
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