Question

Kayla has two magnets. She would like to know how much magnetic energy is stored in each one. What would be the best way for her to determine which magnet has the most magnetic energy?(4 points)
Responses

Record the mass of each magnet by measuring it on a balance scale.
Record the mass of each magnet by measuring it on a balance scale.

Attach wires to the ends of each magnet and measure the currents going through the wires.
Attach wires to the ends of each magnet and measure the currents going through the wires.

Measure how close each magnet can get to a metal object before picking it up.
Measure how close each magnet can get to a metal object before picking it up.

Put each magnet into a beaker of water to see how much water it displaces.
Put each magnet into a beaker of water to see how much water it displaces.

Answer 1

Measure how close each magnet can get to a metal object before picking it up.

Reason: that tests the magnets' magnetic attraction (related to stored magnetic energy/strength). Mass or volume tell you size but not magnetism; attaching wires/currents doesn't apply to permanent magnets. A more precise method would be measuring pull-off force with a force gauge or measuring field strength with a gaussmeter.