1
Question
What conclusion can you
draw from the following observations on a resistor made of alloy
manganin?
-
Current
A
Voltage
V
Current
A
Voltage
V
0.2
3.94
3.0
59.2
0.4
7.87
4.0
78.8
0.6
11.8
5.0
98.6
0.8
15.7
6.0
118.5
1.0
19.7
7.0
138.2
2.0
39.4
8.0
158.0
What conclusion can you draw from the following observations on a resistor made of alloy manganin?
-
Current
A
Voltage
V
Current
A
Voltage
V
0.2
3.94
3.0
59.2
0.4
7.87
4.0
78.8
0.6
11.8
5.0
98.6
0.8
15.7
6.0
118.5
1.0
19.7
7.0
138.2
2.0
39.4
8.0
158.0
Open in App
Solution
It can be inferred from
the given table that the ratio of voltage with current is a constant,
which is equal to 19.7. Hence, manganin is an ohmic conductor i.e.,
the alloy obeys Ohm’s law. According to Ohm’s law, the
ratio of voltage with current is the resistance of the conductor.
Hence, the resistance of manganin is 19.7 Ω.
It can be inferred from the given table that the ratio of voltage with current is a constant, which is equal to 19.7. Hence, manganin is an ohmic conductor i.e., the alloy obeys Ohm’s law. According to Ohm’s law, the ratio of voltage with current is the resistance of the conductor. Hence, the resistance of manganin is 19.7 Ω.
Suggest Corrections
3
Here negative time means time before the starting of observation.
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