Describe how you can recognise a positive vs. a negative vs a zero slope on a graph. Sketch and explain.

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.

an electric circuit

answeralert drivers who drift off the road;