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1.The potential due to a few charges at one point can be found by adding the potential due to each individual charge. It is easy to add them, because potential is a scalar and can be added directly (without considering directions and angles). True or False? 2.The total potential energy due to a few charges can be found by adding the potential energy due to each PAIR of point charges. True or False? 3.In Sample 25.3 the systems potential energy change associated with adding the third charge q3, is equal to the charge times the potential due to the first two charges at point P It is also equal to the sum of potential energy due to two pairs of charges, U13 (between gl and q3) and U23 (between q2 and q3). True or False?

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Answer #1

1. True

We know that the potential is a scalar quantity so

   as given in the question its true . that is the potential due to a feq charges at one point can be found by adding the potential due to each individual charge


2.True

potential energy of two charges is
U = kq1*q2/r

so its true

3. True

definition of potential

   the amount of work done or energy required to place a test charge bringing it from infinity to a point inside the electriec field is its poteniall at that point

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