Electricity and Magnetism - SS2 Physics Past Questions and Answers - page 2
The unit of capacitance is:
Ohms
Volts
Coulombs
Farads
The formula for capacitance is given by:
C = Q / V
C = V / Q
C = ε0A / d
C = QV
When the distance between the plates of a parallel-plate capacitor is halved, the capacitance:
Doubles
Halves
Remains the same
Becomes zero
Capacitors in series have a total capacitance that is:
Equal to the sum of the individual capacitances
Less than the smallest individual capacitance
Greater than the largest individual capacitance
Inversely proportional to the individual capacitances
The energy stored in a charged capacitor is given by:
U = (1/2) CV2
U = (1/2) Q2
U = (1/2) QV
U = (1/2) CV
The dielectric material inserted between the plates of a capacitor:
Increases the capacitance
Decreases the capacitance
Does not affect the capacitance
Makes the capacitor non-functional
A capacitor with a capacitance of 10 μF is connected to a voltage source of 12 V. What is the charge stored on the capacitor?
Two capacitors, C₁ = 5 μF and C₂ = 10 μF, are connected in series. What is the total capacitance of the combination?
Three capacitors, C₁ = 4 μF, C₂ = 6 μF, and C₃ = 8 μF, are connected in parallel. What is the total capacitance of the combination?
A capacitor is charged to a voltage of 200 V and stores a charge of 50 μC. What is the capacitance of the capacitor?