Question

ch 18 how electrotherapy and light therapy treat the skin case study quiz
question 4 of 5
1 point
you have just purchased a galvanic machine. how many electrodes does it have?
select the correct response:
1
2
4
3

Explanation:

Galvanic machines are used in electrotherapy and typically have 2 electrodes - a positive and a negative one to create a direct - current flow for skin treatment purposes.

Answer:

B. 2