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1. A parallel-plate capacitor with a capacitance of 2.80×10−92.80×10−9 F has a plate separation of 3.3...

1. A parallel-plate capacitor with a capacitance of 2.80×10−92.80×10−9 F has a plate separation of 3.3 mm. What is its plate area?

4. Tungsten has a temperature coefficient of resistivity of 0.0045 (C°)-1. A tungsten wire is connected to a source of constant voltage via a switch. At the instant the switch is closed, the temperature of the wire is 30 °C, and the initial power delivered to the wire is P0. At what wire temperature will the power that is delivered to the wire be decreased to 2/3 P0?

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Answer #1

8-85x 1012 x A 1.1x lo 3 2.8x lo C =Eo x A Awmer A . o4 2. X RO 그r Ro R xI (T- 20 ) 0.0 D4s (T-30) c lt Ar TE141.c MIN A

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