Really not sure on this one. Can you give me an explanation to why the answer is
ID: 1586752 • Letter: R
Question
Really not sure on this one. Can you give me an explanation to why the answer is what it is? You can have more then one answer.
A parallel plate capacitor is connected to a battery for charging. After some time, while the battery is still connected to the capacitor, the distance between the capacitor plates is doubled. Which of the following statements are true? A. The charge on the plates does not change. B. The electric field between the plates is halved. C. The capacitance doubles. D. The potential difference across the plates does not change. E. The potential difference of the battery is halved.Explanation / Answer
A) the charge can't go anywhere . hence , it remains the same . TRUE
B) electric field = V/d but V = Q/C
E = V/d = Q/Cd
but C = Ae0/d when d is doubled C is halved
E = Q/Cd
when C is halved ,Q remains the same and d is doubled
E remains same.
Hence , this statement is FALSE
C) capaciatnce is halved. explaned in part B . hence , FALSE
D) False. explaned above
e) V = Q/C . when C is halved. V will be doubled. so this is also False
only option A is correct
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