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Grade 12Electrostatics

A charged bead of 4 micro columb is threaded on a fixed smooth circular ring of radius 2m in gravity free space . Another same charge is fixed at 1m from center . the bead is projected with such sufficient velocity to complete the circular path . If the mass of bead is 100gm . what is initial speed v?
  1. 80 root 3 cm/sec
  2. 40 root2 cm/sec
  3. 10 m/s
  4. 4 root 5 m/sec

Profile image of sharanya
6 Years agoGrade 12
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2 Answers

Profile image of ROSHAN MUJEEB
6 Years ago
Please find the attached
Profile image of Vikas TU
6 Years ago
Dear student 
At first, we have to find a situation in which the bead completes a circle after that we can easily solve using law of conservation of energy.
Plese attach an image.
Good Luck