Question

Where is the electric field zero? a. region 2, 0.46 m from the +7 µC charge b. region 2, 0.46 m from the +5 µC charge c. the field is not zero anywhere on the x axis (except at infinity)d. region 3, 0.46 m from the +7 µC chargee. region 1, 0.46 m from the +5 µC charge

Answer 1

Answer:

the field is not zero anywhere on the x axis (except at infinity)

Explanation:

From the Coulomb's law we have electric field intensity as:

$E=\frac{1}{4\pi.\epsilon_o} \frac{q}{r^2}$

where:

$\epsilon_o=$ permittivity of free space

$q=$ charge due to which the field is generated.

$r=$ distance from the charge

So, from the above relation:

Electric field due to a charge can only be zero at infinity.