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 10 μF capacitor is charged to 12 V. Calculate the charge stored on the capacitor.
A 2 μF capacitor is connected in series with a 3 μF capacitor and a 6 μF capacitor. What is the equivalent capacitance?
A 20 μF capacitor is charged to 100 V. Calculate the energy stored in the capacitor.
A 5 μF capacitor and a 10 μF capacitor are connected in parallel. What is the total capacitance?
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 capacitor of 4 μF is connected in series with another of 6 μF. What is the equivalent capacitance?
A capacitor of 8 μF is charged to 50 V. What is the charge stored on the capacitor?
A parallel plate capacitor has a capacitance of 5 μF. If the distance between the plates is doubled, what will be the new capacitance?
A parallel plate capacitor has plates of area 0.02 m2 separated by 1 mm. If the dielectric constant is 5, calculate its capacitance. (ε0 = 8.85 × 10-12 F/m)
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.
Describe what happens to the energy stored in a capacitor if the voltage across it is doubled.
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?
If three capacitors of 2 μF, 3 μF, and 6 μF are connected in series, what is the equivalent capacitance?
State the effect on the capacitance of a parallel plate capacitor if the distance between the plates is doubled.
