Capacitance and Capacitors
Physics ⇒ Electricity and Magnetism
Capacitance and Capacitors starts at 11 and continues till grade 12.
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See sample questions for grade 11
A capacitor is charged to a potential difference V and then disconnected from the battery. If the plate separation is increased, what happens to the charge on the plates?
A capacitor is connected to a battery and then disconnected. If a dielectric is inserted between the plates, what happens to the voltage across the plates?
A parallel plate capacitor has a capacitance of 5 μF. If the distance between the plates is doubled, what will be the new capacitance?
Describe the effect of connecting a capacitor to a DC battery for a long time.
Describe the process of charging a capacitor through a resistor.
Explain the term 'breakdown voltage' in the context of capacitors.
Explain why capacitors are used in electronic circuits.
Explain why the energy stored in a capacitor is not equal to the total work done by the battery in charging it.
Explain why the plates of a capacitor are separated by an insulating material.
If the area of the plates of a parallel plate capacitor is doubled and the distance between them is halved, by what factor does the capacitance change?
State the effect on the capacitance of a parallel plate capacitor if the distance between the plates is doubled.
What is the main function of a dielectric in a capacitor?
What is the SI unit of capacitance?
