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luda_lava [24]
3 years ago
7

Students hypothesized that by running an electric current through the wire of the apparatus shown here, they could cause a non-m

agnetic nail to exhibit magnetic properties. What would be a reasonable way to test this?
a

Question 7 options:

a.Weigh the nail first while before turning the current on and again while the current was on.


b.Put the nail in water before turning the current on and again after turning the current off.


c.Examine the nail under a microscope before turning the current on and again after turning the current off.


d.See if iron filings will stick to the nail before turning the current on and again while the current was on.
Physics
2 answers:
Romashka-Z-Leto [24]3 years ago
8 0
Without the picture its hard to say, but i would say D
laiz [17]3 years ago
5 0
D) see if the iron fillings will stick to the nail before turning the current on and again while the current was on

I took the test
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1. The current in a wire is 0.72A. Calculate the charge that passes through the wire in; a. 4 s b. 60 s c. 180 s d. 7 s e. 0.5 s
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Let current be I, charge be Q and time be t.
Here we are provided with,
I = 0.72A
t = 4s / 60s / 180s / 7s / 0.5s
We know,
I = Q/t

Case I
---------
When, t = 4s
0.72 = Q/4
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Case II
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When, t = 60s
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Q = 0.72 * 60 = 43.2C

Case III
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When, t = 180s
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Case IV
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Q = 0.72 * 7 = 5.04C

Case V
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When, t = 0.5s
0.72 = Q/0.5
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