Which of the following elements are found in Group 1A (sometimes referred to as Group 1)?
Check all that apply.
A. Potassium
B. Argon
C. Hydrogen
D. Krypton

A. Potassium

C. Hydrogen

Explanation:

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.

at right angles to each other