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Edexcel | Physics WPH0 | W 18 4 1 | 1 hour 30 minutes
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1 Mark

Two charged spheres of equal mass are suspended with insulating threads of equal length.

Which of the following shows the arrangement of these spheres when they are in equilibrium?

A

B

C

D

The only correct answer is C

A is not correct as this would suggest zero force acting on the sphere with +Q charge but a

    larger force on the other sphere, therefore not equal and opposite.

B is not correct as this suggests a greater force acting on the 10Q sphere, therefore not equal

     and opposite.

D is not correct as this suggests a lesser force acting on the 10Q sphere, therefore not equal and

     opposite

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