Question

Use the table to answer the question.
Electromagnet Current Intensity Number of Turns

P medium 20

Q low 20

R low 15

Which list shows the electromagnets in order from strongest magnetic force to weakest magnetic force?
A. R, Q, P
B. R, P, Q
C. P, Q, R
D. Q, R, P

Answer 1

C

Magnetic force ∝ number of turns × current. P = 20×(medium) > Q = 20×(low) > R = 15×(low), so order is P, Q, R.