To determine the strength of the electromagnets based on their current intensity and the number of turns, we consider that both the current intensity and the number of turns contribute to the strength of an electromagnet. Generally, higher current intensity and more turns result in a stronger magnetic force.
Here's a breakdown of the electromagnet's current intensity and number of turns:
- P: Medium current intensity, 20 turns
- Q: Low current intensity, 20 turns
- R: Low current intensity, 15 turns
Based on the current intensity:
- P (medium) has a stronger current than both Q and R (low).
- Q and R have low current, but Q has more turns than R, which might give it an advantage.
Let's compare:
- P has medium current and 20 turns, so it will likely have the strongest magnetic force.
- Q has low current but more turns (20).
- R has the lowest current (low) and the least number of turns (15).
Thus, we rank them from strongest to weakest as follows:
- P (medium current, 20 turns)
- Q (low current, 20 turns)
- R (low current, 15 turns)
Given this analysis, the correct order is P, Q, R.
So, the response is: P, Q, R.