8.3 Lesson Set 1 Review Quiz

Which experimental setup best helps in determining if the magnet interacts with the coil of wire without physical contact?

• 1. Holding the magnet close to the coil without letting them touch

• 1. Attaching the magnet directly to the coil

• 1. Placing the magnet far away from the coil

• 1. Wrapping the coil around a different object

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What evidence would be most reliable in concluding an energy transfer between the magnet and coil?

• 1. If either the magnet or the coil moves

• 1. If the coil becomes hot

• 1. If the coil changes color

• 1. If the magnet changes weight

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Which evidence supports the claim that matching the poles of magnets causes a repulsion force?

• 1. When the magnets lose their magnetic properties

• 1. When both magnets push away from each other

• 1. When one magnet lifts the other

• 1. When both magnets stick together tightly

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Which conclusion can be drawn if the compass needle moves when placed near a current-carrying coil?

• 1. The coil is made of iron.

• 1. The compass is not working correctly.

• 1. The coil has produced a magnetic field.

• 1. The needle is broken.

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How would you assess the change in kinetic energy of the magnet and coil when connected to a battery?

• 1. By checking the color change of the wire

• 1. By measuring the weight of the battery

• 1. By tracking the sound intensity near them

• 1. By observing any movement of the coil or magnet

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What is the best evidence that a coil of wire connected to a battery creates a magnetic field?

• 1. It warms up slightly.

• 1. It attracts or repels a nearby magnet.

• 1. It changes color.

• 1. It starts to glow.

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Based on the investigation, what would you expect to observe if the polarity of the battery connections to the coil is reversed?

• 1. The battery would lose its charge instantly.

• 1. The coil would start behaving like a normal piece of metal.

• 1. The direction of the magnetic field and the resulting force would also reverse.

• 1. The coil would stop producing any magnetic effect.

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Is the compass needle a permanent magnet, or is it just made of a metal that interacts with magnets? Why?

• 1. The compass needle is just a metal because it does not stick to other metals.

• 1. The needle is a non-metal and does not have a magnetic field.

• 1. The compass needle changes its direction randomly, showing it’s not a magnet.

• 1. The compass needle is a permanent magnet because it always points north, indicating it has a consistent magnetic field.

Which observation would confirm that a force exists on the coil from the magnet?

• 1. The battery life increases.

• 1. The coil moves or vibrates when placed near a magnet.

• 1. The coil changes its color.

• 1. The magnet warms up.

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What happens to the coil when you connect it to a battery?

• 1. The coil lights up.

• 1. The coil makes noise.

• 1. The coil creates a magnetic field.

• 1. The coil gets colder.

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