Parallel Plate Capacitors Video Lessons

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Problem: A 2.0-cm-diameter parallel-plate capacitor with a spacing of 0.50 mm is charged to 200 V?Part A. What is the total energy stored in the electric field? Express your answer using two significant figures.U=______ Part B. What is the energy density. Express your answer using two significant figures.u = ________

FREE Expert Solution

The capacitance of a parallel plate capacitor:

C=ε0Ad

Energy stored in a capacitor:

U=CV22=QV2=Q2C

(a)

d = 0.50 mm(1m/1000mm) = 5.0 × 10-4 m

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Problem Details

A 2.0-cm-diameter parallel-plate capacitor with a spacing of 0.50 mm is charged to 200 V?


Part A. What is the total energy stored in the electric field? Express your answer using two significant figures.

U=______ 


Part B. What is the energy density. Express your answer using two significant figures.

u = ________

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