An Ideal Air-Filled Parallel-Plate Capacitor with Horizontal Plates Has a Plate

question 107

Multiple Choice

An ideal air-filled parallel-plate capacitor with horizontal plates has a plate separation of 5.0 cm.If the potential difference between the plates is 2000 V,with the top plate at the higher potential,what are the magnitude and direction of the $\vec { E }$ field between the plates?

• A)100 N/C upward
• B)100 N/C downward
• C)40000 N/C upward
• D)40000 N/C downward

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