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WorksheetsReview Electricity and Magnetism
Total questions: 12
Worksheet time: 6mins
A student is creating an electromagnet for an investigation. Which feature of the electromagnet will least influence the magnetic force?
the material of the core
the brand of the battery
the number of wire coils
the size of the power source
Which of the following might make the spoons repel each other?
A and B are not charged at all
Both A and B are the same charge (negative and negative)
A and B are opposite charges (A is positive and B is negative)
Which statement best describes why the child's hair stands up after he slides down the slide?
Energy was transferred from the slide to the child through induction, causing the child's hair to become charged and stand up.
Friction caused a transfer of electrons between the slide and the child, making each of his like-charged hairs repel each other
Energy was transferred from the child to the slide through conduction, causing the child's hair to become charged and stand up.
Friction caused a transfer of electrons between the slide and the child, making his like-charged hairs attract the air through induction.
Which combination of materials would allow Darwin to make the strongest electromagnet?
iron nail, copper wire, 5-volt battery
iron nail, copper wire, 1.5-volt battery
wooden pencil, copper wire, 5-volt battery
wooden pencil, copper wire, 1.5-volt battery
What conclusion can Brian most likely draw about his observation?
The two paper clips were outside the magnet's electromagnetic field.
The two paper clips did not have magnetic properties like the others.
The two paper clips were not light enough to be pulled by the magnet.
The two paper clips were repelled by the electromagnet and not picked up
What must an object gain or lose to become electrically charged?
protons
electrons
neutrons
nucleus
What is the difference between charging by conduction and charging by induction?
During conduction, charges move between objects that briefly touch; during induction, charges move between objects that are rubbed together.
During induction, charges move between objects that briefly touch; during conduction, charges move between objects that are rubbed together.
During conduction, charges move between touching objects; during induction, charges are rearranged within an object that is near another object.
During induction, charges move between touching objects; during conduction, charges are rearranged within an object that is near another object.
Groups of atoms that align to form small, magnetized regions in a material are
geographic domains
magnetic field lines
magnetic domains
magnetic poles
Catherine rubs an iron nail with a ferromagnet (permanent) in one direction. Which of the following is true of the magnetized nail?
It will only be attracted to the north pole of a bar magnet.
It has a strong north pole and a much weaker south pole.
Its domains have become rearranged so that they line up in the same direction.
The bar magnet has caused a random arrangement of the nail’s domains.
Electrical wires sometimes have a plastic coating wrapped around them. How does this make the wires safer to handle?
Plastic does not react chemically with air.
Plastic is smooth and not easily frayed.
Plastic is a good insulator.
Plastic will melt if the wires overheat
The law of conservation of charge states that _____
charge is not created or destroyed or transferred from object to object
the mass of all substances present before a chemical change equals the mass of all the substances remaining after the change
electric charge is not created or destroyed only transferred from object to object
charge can be created and destroyed but cannot be transferred
Jane put a bar magnet near an object on her desk. As the magnet gets closer to the object, the object is repelled and moves away from the magnet. Which of the following statements about the object on Jane’s desk is true?
The object has a north pole but no south pole.
The object is a magnet or has been magnetized.
The object has randomly arranged domains.
The object is not made of metal.
