At Which Point (Or Points) Is the Electric Field Zero

question 57

Multiple Choice

At which point (or points) is the electric field zero N/C for the two point charges shown on the x axis?

• A)The electric field is never zero in the vicinity of these charges.
• B)The electric field is zero somewhere on the x axis to the left of the +4q charge.
• C)The electric field is zero somewhere on the x axis to the right of the -2q charge.
• D)The electric field is zero somewhere on the x axis between the two charges, but this point is nearer to the -2q charge.
• E)The electric field is zero at two points along the x axis; one such point is to the right of the -2q charge and the other is to the left of the +4q charge.

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