1. Which secondary sex characteristics would you expect a 13-year-old boy to develop? hipdevelopment and hormone release
O nocturnal emission
O testes development
O voice quality and facial hair

SEX

Explanation:

i think its the 3rd option tho

we need answer choices

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.