Testing the electric field
a point charge is placed 3 m from a 4 uc charge. what is the strength of the electric field on the point charge at this
distance? (round to the nearest whole number.)
5

The strength of the electric field on the point charge at this distance is 4000 N.

Explanation:

The electric field strength is determined using the formula

Thus, field strength is directly proportional to the charge of the charge and inversely proportional to the square of the distance between them. In the above equation, Q is the charge and d is the distance, k is the constant 9×

So, the electric field strength will be

So the electric field strength is 4000 N.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

answera compound;