How much work is required to carry a 0.02uC charge from point r = 40cm to that at r = 5cm? ​

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

well clustered together.

points close on a scatter diagram