Lab: Magnetic and Electric Fields

Question 1

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

Revolt · Accepted Answer

A: a metal hammer; D: the metal frame of your chair; F: the screws and nails that hold your desk together

Question 2

The Earth has a magnetic field. If you were to use a bar magnet to represent the magnet causing the magnetic field, which representation would be correct?

Revolt · Accepted Answer

A: [Image: The Earth is shown with curved lines marked by arr...]

Question 3

yes✔ no

Revolt · Accepted Answer

B: ✔ no

Question 4

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

Revolt · Accepted Answer

A: With no current, the compass needle will not move.; B: If the light bulb is on, the compass needle will move.; E: Changing the battery terminals will change the current flow and the compass will point differently.

Question 5

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

Revolt · Accepted Answer

A: variable amounts of metal and magnetic properties of a material; B: holding the compass at an angle; D: unseen magnetic fields (such as from an electrical appliance); F: using a dead battery in the circuit

Question 6

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.

Revolt · Accepted Answer

B: Experiment with a wider range of materials.; D: Use a laboratory galvanometer to make precise measurements.; E: Test the strength of the electromagnet by varying the number of wire coils.

Question 7

✔ compasselectronic balancegalvanometer

Revolt · Accepted Answer

A: ✔ compass

Question 8

✔ They will attract each other.They will repel each other.There will be no effect.

Revolt · Accepted Answer

A: ✔ They will attract each other.

Question 9

an electric current✔ a magnetic fielda vacuum

Revolt · Accepted Answer

B: ✔ a magnetic field

Question 10

✔ galvanometerelectronic balancethermometer

Revolt · Accepted Answer

A: ✔ galvanometer

Lab: Magnetic and Electric Fields Answers

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