Factors Affecting Forces Practice Test

A student uses the same magnet to pick up paper clips. When the magnet is 1 cm away, it pulls 12 clips into a chain. When the magnet is 8 cm away, it pulls 0 clips. What does this evidence show about magnetic force?

A student tests how magnet strength and distance affect magnetic force using identical paper clips.

• Test 1: Weak magnet at 2 cm holds 2 clips.
• Test 2: Weak magnet at 1 cm holds 5 clips.
• Test 3: Strong magnet at 2 cm holds 10 clips. Which comparison best isolates the effect of distance on magnetic force?