It is found that the resistance of a coil of wire increases from 40 ohms at 15 degrees Celsius to 50 ohms at 60 degrees Celsius. Calculate the resistance temperature coefficient at O degree Celsius of the conducting material. Use 8 decimal places and unit of "per degree Celsius". *
It is found that the resistance of a coil of wire increases from 40 ohms at 15 degrees Celsius to 50 ohms at 60 degrees Celsius. Calculate the resistance temperature coefficient at O degree Celsius of the conducting material. Use 8 decimal places and unit of "per degree Celsius". *
Chapter7: Electricity
Section: Chapter Questions
Problem 4C: Using your understanding of the nature of internal energy and temperature, explain why we might...
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Transcribed Image Text:It is found that the resistance of a
coil of wire increases from 40 ohms at
15 degrees Celsius to 50 ohms at 60
degrees Celsius. Calculate the
resistance temperature coefficient at
O degree Celsius of the conducting
material. Use 8 decimal places and
unit of "per degree Celsius". *
Your answer
An armature has a resistance of 0.2
ohm at 15 degrees Celsius and the
armature copper loss is to be limited
to 600 watts with a temperature rise
to 55 degrees Celsius. If RTC at 0
degree Celsius is 0.0043/°C, what is
the maximum current that can pass
through the armature? Formula: P
%3D
1^2*R. *
Your answer
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