Use the table to answer the question.

Question

Electromagnet Current Intensity Number of Turns
P medium 20
Q low 20
R l low 15

Which list shows the electromagnets in order from strongest magnetic force to weakest magnetic force? (1 point)

P, Q, R
Q, R, P
R, Q, P
R, P, Q

Answer 1

To determine the order of the electromagnets from strongest to weakest magnetic force, we can consider two key factors: the current intensity and the number of turns in the coils.

1. Electromagnet P

   • Current Intensity: medium
   • Number of Turns: 20

2. Electromagnet Q

   • Current Intensity: low
   • Number of Turns: 20

3. Electromagnet R

   • Current Intensity: low
   • Number of Turns: 15

Electromagnet P has a medium current intensity, while both Q and R have low current intensity. Electromagnet P will likely produce a stronger magnetic force due to having a medium current compared to the low currents in Q and R.

Now comparing Q and R:

• Both have low current intensity, but Q has more turns (20) compared to R (15). More turns usually contribute to a stronger magnetic field in a coil.

So the strength order will be:

1. P (strongest, medium current)
2. Q (low current, more turns)
3. R (low current, fewer turns)

Thus, the correct order from strongest magnetic force to weakest magnetic force is: P, Q, R.