2) Suppose all charges are now doubled (i.e., q1 = -7.8 μC, q2 = 13.6 μC, q3 =

Question

2) Suppose all charges are now doubled (i.e., q1 = -7.8 μC, q2 = 13.6 μC, q3 = 4.6 μC), how will the electric field at P change?

Its magnitude will increase by less than a factor of two and its direction will remain the same

Its magnitude will increase by less than a factor of two and its direction will change

Its magnitude will double and its direction will remain the same

Its magnitude will double and its direction will change

3) How would you change q1 (keeping q2 and q3 fixed) in order to make the electric field at point P equal to zero?

Increase its magnitude and change its sign

Decrease its magnitude and change its sign

Increase its magnitude and keep its sign the same

Decrease its magnitude and keep its sign the same

There is no change you can make to q1 that will result in the electric field at point P being equal to zero.

Explanation / Answer

2)Its magnitude will double and its direction will remain the same

3)Increase its magnitude and keep its sign the same

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