Question

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.​

Answer 1

b d e

Explanation...................................

Answer 2

* Experiment with a higher range of materials

* Use a galvanometer.

* Vary in number of coils of the electromagnet

Step-by-step explanation:

This is an experiment of electricity and magnetism, in general the best way to improve the results are:

* Experiment with a higher range of materials

allowing to know the scope of the initial assumptions

* Use a galvanometer.

The more accurate the readings the error of the derived quantities is the less which will improve the precision of the experiment.

* Vary in number of coils of the electromagnet

Since it allows to have greater magnetic fields and therefore expand the range of measurements