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WorksheetsCapacitors & Inductors Quiz
Total questions: 15
Worksheet time: 8mins
What is the function of a capacitor in a circuit?
To increase voltage
To store electric charge
To generate current
To convert AC to DC
Which unit is used to measure capacitance?
Ohm
Volt
Farad
Ampere
What does an inductor resist?
Voltage changes
Temperature changes
Changes in electric current
Magnetic field
Which rule helps determine the direction of magnetic field around a current-carrying wire?
Left hand rule
Fleming’s rule
Right hand rule
Newton’s rule
Which component is used in an RC circuit along with a capacitor?
Inductor
Diode
Resistor
Transformer
Which of the following increases the capacitance of a capacitor?
Smaller surface area
Larger distance between plates
Lower dielectric permittivity
Larger surface area of plates
What happens when a charged capacitor is disconnected from a power supply?
It loses all charge instantly
It becomes a voltage source and discharges gradually
It stops working
It reverses polarity and discharges gradually
What is the unit of inductance?
Farad
Henry
Ohm
Volt
In an RL circuit, what happens to the current when the switch is first closed and the inductor has no stored energy?
Current drops instantly to zero
Current increases gradually due to opposition by inductor
Current flows at maximum immediately
Voltage across inductor increases instantly
Why does an inductor cause a circuit to be “sluggish” when voltage changes?
It stores charge like a capacitor, , causing gradual response
It blocks all current, causing static response
It opposes changes in current, causing gradual response
It converts AC to DC, causing static response
What is the circuit symbol for a capacitor?
Circle with a plus sign
Two parallel lines
Square with a minus sign
Circle with an arrow
Which component stores energy in a magnetic field?
Capacitor
Resistor
Inductor
Diode
What happens if there is no resistor in an RC circuit?
The capacitor won’t charge
Current flows slowly
The capacitor stores more energy
The capacitor discharges very quickly
What happens when current through an inductor changes?
Nothing happens
Magnetic field disappears
A voltage is induced in the opposite direction
Current increases instantly
During the discharging phase of an RL circuit, what happens to the current?
It increases suddenly
It stops immediately and gradually decreases
It continues flowing and gradually decreases
It reverses direction
