Question
Asked Feb 7, 2020
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A charge +q is at the origin. A charge -2q is at x = 1.30 m on the +x axis.
(a) For what finite value of x is the electric field zero?
(b) For what finite values of x is the electric potential zero? (Note: Assume a reference level of potential V = 0 at r = 0,.)
Smallest value of x:
-1.3
Largest value of x:
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A charge +q is at the origin. A charge -2q is at x = 1.30 m on the +x axis. (a) For what finite value of x is the electric field zero? (b) For what finite values of x is the electric potential zero? (Note: Assume a reference level of potential V = 0 at r = 0,.) Smallest value of x: -1.3 Largest value of x:

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Expert Answer

Step 1

(a)

The figure shows the charge is located on the +x axis.

Physics homework question answer, step 1, image 1

From the figure, the electric field where the point zero at a finite distance,

Physics homework question answer, step 1, image 2

Step 2

Solve the above relation for quadratic equation.

Physics homework question answer, step 2, image 1

Solve the above quadratic equation.

Physics homework question answer, step 2, image 2

Hence, finite value of x at which the electric fields zero taken as negative value is -8.06 m.

Step 3

(b)

The figure shows the charge is located on the +x axis.

Physics homework question answer, step 3, image 1

From the figure, the electric potential where the point zero at a finite distance,

Physics homework question answer, step 3, image 2

...

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