Lab: Magnetic and Electric Fields Answers

Predict what would happen to the strength of the electromagnet in each situation.

✔ compasselectronic balancegalvanometer

✔ galvanometerelectronic balancethermometer

type of materialcharge of an objectmovement of a magnet✔ presence of an electric field

✔ magnetwindlight source

Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Use the drop-down menus to complete the statements.

type of material✔ charge of an objectmovement of a magnetpresence of an electric field

type of materialcharge of an object✔ movement of a magnetpresence of an electric field

Do the two particles have the same charge?

If the particles are free to move, what affect will the two particles have on each other?

If a third particle was added to this field with a positive charge, what would it be attracted to?

If an uncharged particle was placed between A and B, which way would it move?

Based on the trends you observed in the laboratory exercise, which objects would you expect to be attracted to a bar magnet? Check all that apply.a metal hammera wooden rulera plastic carthe metal frame of your chairthe paper in your notebookthe screws and nails that hold your desk together

saw dustsifted flour✔ iron shavings

Use the drop-down menus to complete the passage.

Which statements are true about moving the compass around the wire? Check all that apply.

Predict what would happen to the strength of the electromagnet in each situation.

Which are potential sources of error in the experiment? Check all that apply.variable amounts of metal and magnetic properties of a materialholding the compass at an anglethe color of the bar magnetunseen magnetic fields (such as from an electrical appliance)the brand of light bulb used in the circuitusing a dead battery in the circuit

Which are ways to improve the design of this experiment? Check all that apply.Record data only at the very end to save time.Experiment with a wider range of materials.Use more legible handwriting when recording data.Use a laboratory galvanometer to make precise measurements.Test the strength of the electromagnet by varying the number of wire coils.