Calculating Electric Field Strength: +5.0810^-6 Charge at 0.3m from Sphere

[pat666]

Homework Statement

calculate the electric field strength 0.3m from the centre of a small metal sphere cArying a charge of +5.0810^-6

Homework Equations

The Attempt at a Solution

TRIED putting into f = q1q2k/d^2 with q1 and q2 both being the known charge, but did not work

any help is appreciated thanks

 

[rl.bhat]

How you define electric field?

 

[pat666]

i don't know what you mean the entire question is written out.

 

[rl.bhat]

i don't know what you mean the entire question is written out.

What is the expression for an electric field at a point d from a charge q?
In the problem only one charge is given.

 

[pat666]

not sure, that's the question given. maybe its not right.

 

[pat666]

dont worry i figured it out myself it was E = kq/d^2
thanks anyway.