#1
What is the unit of electrical resistance?
Ohm
ExplanationOhm is the SI unit of electrical resistance.
#2
Which component is used to store electrical charge?
Capacitor
ExplanationA capacitor is a component that stores electrical charge.
#3
What is the SI unit of electric charge?
Coulomb
ExplanationThe Coulomb is the SI unit of electric charge.
#4
Which type of circuit allows only one path for current flow?
Series circuit
ExplanationA series circuit allows only one path for current flow.
#5
What is the unit of electric current?
Ampere
ExplanationAmpere is the unit of electric current.
#6
Which component is commonly used to control the flow of current in a circuit?
Transistor
ExplanationA transistor is commonly used to control the flow of current in a circuit.
#7
What does AC stand for in electrical systems?
Alternating Current
ExplanationAC stands for Alternating Current in electrical systems.
#8
Which law states that the voltage across a conductor is directly proportional to the current passing through it?
Ohm's Law
ExplanationOhm's Law states that the voltage across a conductor is directly proportional to the current.
#9
What is the function of a transformer in an electrical system?
To regulate voltage
ExplanationA transformer's function in an electrical system is to regulate voltage.
#10
Which material is commonly used as an insulator in electrical systems?
Rubber
ExplanationRubber is commonly used as an insulator in electrical systems.
#11
What is the purpose of a fuse in an electrical circuit?
To prevent overcurrent
ExplanationA fuse's purpose in an electrical circuit is to prevent overcurrent.
#12
Which law states that the total current entering a junction equals the total current leaving the junction in a circuit?
Kirchhoff's Current Law
ExplanationKirchhoff's Current Law states that the total current entering a junction equals the total current leaving the junction.
#13
What is the purpose of a diode in an electrical circuit?
To allow current flow in one direction only
ExplanationA diode allows current flow in one direction only in an electrical circuit.
#14
What does LED stand for in electronics?
Light Emitting Diode
ExplanationLED stands for Light Emitting Diode in electronics.
#15
What is the function of a relay in an electrical system?
To control a high-power circuit with a low-power signal
ExplanationA relay's function in an electrical system is to control a high-power circuit with a low-power signal.
#16
What is the purpose of an inverter in an electrical system?
To convert DC to AC
ExplanationAn inverter's purpose in an electrical system is to convert DC to AC.
#17
What is the purpose of a potentiometer in an electrical circuit?
To provide variable resistance
ExplanationA potentiometer's purpose in an electrical circuit is to provide variable resistance.