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A ring of radius 6cm is given a charge 10 micro coulomb. How much work will be done in transporting a charge of 6 micro coulomb from its centre to a point 8cm along it's axis .?
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A ring of radius 6cm is given a charge 10 micro coulomb. How much work...
Given:


  • Radius of the ring, r = 6 cm

  • Charge on the ring, Q = 10 micro coulomb

  • Charge to be transported, q = 6 micro coulomb

  • Distance from the center of the ring to the final point, d = 8 cm



Calculations:


  • Electric potential at the center of the ring can be calculated as:


    • V = kQ/r

    • V = (9 × 10^9 Nm^2/C^2) × (10 × 10^-6 C) / (6 × 10^-2 m)

    • V = 1.5 × 10^6 V



  • The work done in moving a charge q from a point P with potential V1 to a point Q with potential V2 is given by:


    • W = q(V2 - V1)



  • Electric potential at a point P at a distance x from the center of the ring can be calculated as:


    • V = kQ/sqrt(r^2 + x^2)



  • Electric potential at the final point, V2 can be calculated as:


    • V2 = kQ/sqrt(r^2 + d^2)

    • V2 = (9 × 10^9 Nm^2/C^2) × (10 × 10^-6 C) / sqrt((6 × 10^-2 m)^2 + (8 × 10^-2 m)^2)

    • V2 = 8.29 × 10^5 V



  • Electric potential at the center of the ring, V1 = 1.5 × 10^6 V


  • Work done in moving the charge from the center of the ring to the final point:


    • W = q(V2 - V1)

    • W = (6 × 10^-6 C) × (8.29 × 10^5 V - 1.5 × 10^6 V)

    • W = -7.02 × 10^-1 J




Answer:

The work done in transporting a charge of 6 micro coulomb from the center of the ring to a point 8cm along its axis is -0.702 J. The negative sign indicates that the work is done against the electric field of the ring.
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A ring of radius 6cm is given a charge 10 micro coulomb. How much work...
5.4 j
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A ring of radius 6cm is given a charge 10 micro coulomb. How much work will be done in transporting a charge of 6 micro coulomb from its centre to a point 8cm along it's axis .?
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