Question

Two point charges (q₁ = -4.5?C and q₂ = 8.7 ?C) are fixed along the x-axis, separated by a distance d = 8.6 cm. Point P is located at (x,y) = (d,d).

q1 92

1)

What is E_x(P), the value of the x-component of the electric field produced by q₁ and q₂ at point P?N/C

2)

What is E_y(P), the value of the y-component of the electric field produced by q₁ and q₂ at point P?N/C

3)

$h2_pointC$

A third point charge q₃ = 2.7 ?C is now positioned along the y-axis at a distance d = 8.6 cm from q₁ as shown. What is E_x(P), the x-component of the field produced by all 3 charges at point P?

N/C

4)

Suppose all charges are now doubled (i.e., q₁ = -9 ?C, q₂ = 17.4 ?C, q₃ = 5.4 ?C), 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

5)

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.

Answer 1