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Charge is uniformly distributed throughout a spherical insulating volume of radius R=4.00 cm . The charge per unit volume is −6.5 μCm3 Find the electric field at the center of the sphere. Enter a positive number if the field points radially out, negative if the field points radially in, or zero if there is no field.

Answer :

maxwellekoh

Answer

-8.67× 10^6 N/C

Explanation:

The Electric Field is defined as force per unit charge.

E = Q/ 4π£r2

Qv= −6.5 μCm3

Qv = Q/ V= Q/ 4/3 πr3

Hence Q = 4/3 πr3 × Qv

Hence E = 4/3 πr3 × Qv / 4π£r2= Qvr/3£

−6.5 μ × 4/ 3×8.854 ×10^-12

-6.5 × 4 × 10^6/3 = -8.67× 10^6 N/C

Note: £ = 8.854×10^-12m/F

is the permittivity of free space

Qv is the charge per unit volume

V is volume and volume

The correct option about electric field due to sphere is, “0”.

What is Electric Field ?

  1. Electric field is Electric force per unit charge.
  2. Direction of Electric field is same as of Electric Force.
  3. Electric field due to a positive charge is radially away from it.
  4. Electric field due to a negative charge is radially toward it.

How to solve this question ?

According to gauss law, The electric field inside non conducting sphere is

E = ( ρr ) / ( 3ε₀ )

Taking ρ / ( 3ε₀ ) as constant

E ∝ r

At centre, r = 0

Hence, E will also be 0

Thus, we can conclude that Electric field inside non conducting sphere is E = ( ρr ) / ( 3ε₀ ) and thus at centre it will be 0.

Learn more about Electric field here:

https://brainly.com/question/26199225

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