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Electronic Devices and Circuits

Q1:

The unit of thermal resistance of a semi-conductor device is

A Ohms

B Ohms/°C

C °C/ohm

D °C/watt

ANS:D - °C/watt

The SI units of thermal resistance are kelvins per watt or the equivalent degrees Celsius per watt (the two are the same since the intervals are equal: Δ1 K = Δ 1 °C). The thermal resistance of materials is of great interest to electronic engineers because most electrical components generate heat and need to be cooled.



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