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physics (coulombs law)

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a charge +6 C experiences a force of 2mN in +x direction.
a)what was the electric field there before charge was placed ?
b)describe the force which a -2c charge would experience if it is located at the point in place of the +6c

for a) i assumed the charge is 0 'cos there's no charge placed before that.is it correct?

  • physics (coulombs law) -

    2m N/ 6 C = E in Newtons/coulomb

    (-2/6) (2m N)
    ====================================
    for a) i assumed the charge is 0 'cos there's no charge placed before that.is it correct?

    NO! E is force experienced by test charge of one coulomb

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