What is the magnitude of the electric field 15 mm from the center? Give the numerical value when calculated in units of N/C.

(a) What magnitude point charge (in C) creates a 10,000 N/C electric field at a distance of 0.220 m?   (b) How large (in N/C) is the field at 10.0 m?

There is a 6.5 pC point charge. What is the magnitude of the electric field (in N/C) 70.4 mm away from this charge?

What magnitude of a point charge needed to create a 13700 N/C electric field at a distance of 0.249 m? How large is the field at 14 m?

could you solve this

The electron gun in a 1990’s style television tube uses a uniform electric field to accelerate electrons from rest to 5.0 × 107 m/s in a distance of 1.2 cm.  What is the electric field strength?

Give an expression for the electric field strength ?E at a point in terms of the charge ?q and distance ?r from the charge to that point. Use ?k for 14??014πε0 (i.e. ?≡14??0k≡14πε0).   Use the following notation (without the quotes): "/" for division,  "*" for multiplication, "+" an "-" as usual. For powers used "^2", while for square root use "sqrt". To indicate that square root applies to the whole expression use brackets - for example, for ??‾‾‾‾√AB use sqrt(A*B). For Greek letters such as ?π, ?α etc. use pi, alpha. For example to get 1??2???‾‾‾‾√1πA2BAB use 1/pi*A^2/B*sqrt(AB). Please use the exact variables given in the conditions of the problem: e.g if ?L is given, then do not use ?l.

There is a 22.2 pC point charge. What is the magnitude of the electric field (in N/C) 67.4 mm away from this charge?