A parallel plate capacitor whose capacitance $C$ is $14 pF$ is charged by a battery to a potential difference $V = 12 V$ between its plates. The charging battery is now disconnected and a porcelain plate with $k = 7$ is inserted between the plates, then the plate would oscillate back and forth between the plates with a constant mechanical energy of _______ $pJ .$
(Assume no friction)

Question

A parallel plate capacitor whose capacitance $C$ is $14 pF$ is charged by a battery to a potential difference $V = 12 V$ between its plates. The charging battery is now disconnected and a porcelain plate with $k = 7$ is inserted between the plates, then the plate would oscillate back and forth between the plates with a constant mechanical energy of _______ $pJ .$

(Assume no friction)

Aicharya · Accepted Answer

U i = 1 2 &#215; 14 &#215; 12 &#215; 12 &#160; pJ &#160;&#160; &#8757; U = 1 2 C V 2 = 1008 &#160; pJ U f = 1008 7 pJ = 144 &#160; pJ &#160;&#160; &#8757; C m = k C 0 Mechanical energy = &#916; U = 1008 - 144 = 864 &#160; pJ

A parallel plate capacitor whose capacitance C is 14   pF is charged by a battery to a potential…

Solution

A parallel plate capacitor whose capacitance C is 14 &#160; pF is charged by a battery to a potential…

Solution

A parallel plate capacitor whose capacitance C is 14 pF is charged by a battery to a potential…