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alekssr [168]
3 years ago
9

What is the device used to measure a potential difference in a circult called?

Physics
2 answers:
Doss [256]3 years ago
8 0

Answer:

Voltmeter

Explanation:

A voltmeter measures the difference or as you say potential difference of a circuit.

Ira Lisetskai [31]3 years ago
7 0

Answer:

The device is called a voltmeter

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A 2.0-cm-diameter parallel-plate capacitor with a spacing of 0.50 mm is charged to 200 V?What is the total energy stores in the
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The capacitance of a parallel-plate capacitor is given by:

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where

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Here, the radius of each plate is

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While the separation between the plates is

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U=\frac{1}{2}CV^2=\frac{1}{2}(5.56\cdot 10^{-12} F/m)(200 V)^2=1.11\cdot 10^{-7} J

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u=\frac{1}{2}(8.85\cdot 10^{-12} F/m)(4\cdot 10^5 V/m)^2=0.71 J/m^3

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