Question

the images below show four pairs of magnets. the magnets in different pairs do not affect each other. all the magnets shown are made of the same material, but some of them are different sizes and shapes. think about the magnetic force between the magnets in each pair. select the pair with the magnetic force of greatest magnitude.

Explanation:

Step1: Determine the factors affecting magnetic force

The magnetic force between two magnets depends on the distance between them and the orientation of their poles. Opposite poles attract and like poles repel. The closer the magnets, the stronger the force.

Step2: Analyze each pair

• Pair 1: The distance between the magnets is \(1.6\) cm. The poles facing each other are \(N - N\) (repel).
• Pair 2: The distance is \(2.85\) cm. The poles facing each other are \(N - N\) (repel).
• Pair 3: The distance is \(2.85\) cm. The poles facing each other are \(S - S\) (repel).
• Pair 4: The distance is \(1.6\) cm. The poles facing each other are \(N - S\) (attract).

Since the force is stronger when the magnets are closer (\(1.6\) cm vs \(2.85\) cm) and when the poles are opposite (attract) rather than like (repel).

Answer:

Pair 4