Parallel Plates Capacitors The sketch below is a side view of two capacitors con

Question

Parallel Plates Capacitors The sketch below is a side view of two capacitors consisting of parallel plates in air. The capacitor plates are equal in area but the plate separation differs as shown. Individual capacitors are specified with two letters, for example SR is a single capacitor. The charge on plate S is represented by Qs. The capacitors are charged so that the potential (voltage) at A, VA, initially equals 23 volts. For each of the statements choose the proper response. QT is Qs The electric field between plates S and R is that between plates T and U. The voltage across capacitor SR is that across capacitor TU. QT + U is zero. The energy stored in capacitor SR is the energy stored in capacitor TU. If the plate separation for capacitor TU decreases, the charge on QS will If the plate separation for capacitor TU increases, the energy stored in SR will . Submit Answer Tries 0/15

Explanation / Answer

Capacitance is inversely proportional to the plate separation. So, Capacitance of TU is more than that of SR.

Voltage across both is same.

1) Greater than

Q = CV, so since TU has more C it has more Q.

2) Less than

E = V/d, so since SR has more d it has more E.

3) Equal to

4) Equal to

5) Less than

6) Increase

7) Increase

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