Students made an electromagnet by wrapping a wire in loops around an iron nail
and attaching the wire to a battery, as shown below.
The students conducted a test to learn how the number of wire loops affected the
number of paper clips held by the electromagnet. The table below shows the results
of the test.
Number of wire loops
10
20
30
40
Number of paper clips held
2
4
7
9
Based on the information from the table, which of the following is the outcome
(dependent) variable in this experiment?
Answers: 3
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Answers: 1
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Three resistors are connected in series across a 15-v power supply. if the potential drops across resistors 1 and 2 are 4.1 volts and 3.1 volts, what is the exact potential drop (in volts) across resistor 3?
Answers: 2
Students made an electromagnet by wrapping a wire in loops around an iron nail
and attaching the w...
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