Question

In: Physics

Two point charges of equal magnitude are 8.1 cm apart. At the midpoint of the line...

Two point charges of equal magnitude are 8.1 cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of 40 N/C .Find the magnitude of the charges.

Expert Solution

Let the charges be

Given that the magnitude of charges is equal. So

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If the sign of charges were the same, then the electric field at the midpoint will be zero and that's not the case.

So one charge is positive and other is negative

Let be positive and be negative.

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Electric field direction is radially outwards for a positive charge and it is radially inwards for a negative charge.

Net Electric field at the midpoint,

Given

So

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ANSWER: Magnitude:

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genius_generous answered 2 years ago

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