#1
What is the unit of electric current?
Ampere
ExplanationUnit of measuring the rate of flow of electric charge.
#2
Which electronic component stores electrical charge?
Capacitor
ExplanationStores energy in an electric field.
#3
What property of a material is measured in ohms?
Resistance
ExplanationOpposition to the flow of electric current.
#4
Which of the following is NOT a passive electronic component?
Transistor
ExplanationActs as an active component in a circuit.
#5
Which material is commonly used as a semiconductor in electronic devices?
Silicon
ExplanationAbundantly available and easily processed.
#6
What does the acronym 'AC' stand for in the context of electricity?
Alternating Current
ExplanationPeriodically changes direction.
#7
What is the formula for calculating electrical power?
P = VI
ExplanationProduct of voltage and current.
#8
What does the acronym 'LED' stand for?
Light Emitting Diode
ExplanationEmits light when current passes through it.
#9
What is the function of a transistor in electronic circuits?
To amplify or switch electronic signals
ExplanationControls the flow of current or voltage.
#10
What type of current does a battery provide?
DC
ExplanationFlows in one direction only.
#11
What does the term 'resistance' refer to in electronics?
The opposition to the flow of current
ExplanationProperty of a material to impede current flow.
#12
In a series circuit, how does the total resistance compare to individual resistances?
It is equal to the sum of individual resistances
ExplanationSummation of individual resistances.
#13
What is the primary function of an integrated circuit (IC) chip?
To perform multiple functions on a single chip
ExplanationCompact integration of electronic components.
#14
What is the primary function of a resistor in a circuit?
To oppose or limit the flow of current
ExplanationControls the flow of current.
#15
What is the SI unit of capacitance?
Farad
ExplanationMeasures the ability of a system to store charge.
#16
What is the function of a diode in a circuit?
To control the flow of current
ExplanationAllows current to flow in one direction.
#17
What is the purpose of a relay in an electrical circuit?
To control high-power circuits with low-power signals
ExplanationAllows low-power control of high-power devices.
#18
What is the function of a thyristor in electronic circuits?
To act as a controlled switch
ExplanationSwitches on or off based on control signals.
#19
What does the term 'CMOS' stand for in the context of integrated circuits?
Complementary Metal Oxide Semiconductor
ExplanationCommon semiconductor technology.