3. An air-filled capacitor ,with capacitance Co ,is connected to a battery with potential Vo . The charge stored in the capacitor is Qo a) You proceed to inset a dielectric, with dielectric constant K, between the capacitor plates while it is still connected to the battery i What will its new capacitance C' be, with respect to its initial capacitance Co, derive an expression ii. What will the new potential difference, V', across its plates be with respect to its original potential difference Vo, derive an expression linking V' and Vo iii What will the new charge, Q', stored in the capacitor be with respect to its original charge Qo, derive an expression linking Q' and Qo b) Repeat parts ii and iii if you were to insert the dielectric after you disconnected the capacitor from the battery
3. An air-filled capacitor ,with capacitance Co ,is connected to a battery with potential Vo . The charge stored in the capacitor is Qo a) You proceed to inset a dielectric, with dielectric constant K, between the capacitor plates while it is still connected to the battery i What will its new capacitance C' be, with respect to its initial capacitance Co, derive an expression ii. What will the new potential difference, V', across its plates be with respect to its original potential difference Vo, derive an expression linking V' and Vo iii What will the new charge, Q', stored in the capacitor be with respect to its original charge Qo, derive an expression linking Q' and Qo b) Repeat parts ii and iii if you were to insert the dielectric after you disconnected the capacitor from the battery
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Transcribed Image Text:3. An air-filled capacitor ,with capacitance Co ,is connected to a battery with potential V, - The charge
stored in the capacitor is Qo
a) You proceed to inset a dielectric, with dielectric constant K, between the capacitor plates while it is
still connected to the battery
i What will its new capacitance C' be, with respect to its initial capacitance Co, derive an
expression
ii. What will the new potential difference, V', across its plates be with respect to its original
potential difference Vo, derive an expression linking V' and Vo
iii What will the new charge, Q’, stored in the capacitor be with respect to its original charge Qo,
derive an expression linking Q' and Qo
b) Repeat parts ii and iii if you were to insert the dielectric after you disconnected the capacitor from
the battery
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