#1
What is the SI unit of electric current?
Amperes
ExplanationThe SI unit of electric current is Amperes.
#2
Which component of a circuit restricts the flow of current?
Resistor
ExplanationA resistor is a component in a circuit that restricts the flow of current.
#3
What is the unit of electrical power?
Watts
ExplanationThe unit of electrical power is Watts.
#4
Which material is commonly used as an insulator in electrical wires?
Rubber
ExplanationRubber is commonly used as an insulator in electrical wires.
#5
What is the formula to calculate electrical power?
P = V * I
ExplanationThe formula to calculate electrical power is P = V * I.
#6
Which law states that the total current entering a junction is equal to the total current leaving the junction?
Kirchhoff's Current Law
ExplanationKirchhoff's Current Law states that the total current entering a junction is equal to the total current leaving the junction.
#7
What does the term 'AC' stand for in the context of electricity?
Alternating Current
ExplanationIn electricity, 'AC' stands for Alternating Current.
#8
In a series circuit, how does the total resistance compare to individual resistances?
It is equal to the sum of individual resistances
ExplanationIn a series circuit, the total resistance is equal to the sum of individual resistances.
#9
What does 'DC' stand for in electrical circuits?
Direct Current
Explanation'DC' in electrical circuits stands for Direct Current.
#10
What is the purpose of a diode in a circuit?
To control the flow of current
ExplanationThe purpose of a diode in a circuit is to control the flow of current.
#11
What is the unit of electrical resistance?
Ohms
ExplanationThe unit of electrical resistance is Ohms.
#12
What happens to the total resistance in a parallel circuit as more resistors are added?
It decreases
ExplanationIn a parallel circuit, the total resistance decreases as more resistors are added.
#13
What is Kirchhoff's Voltage Law (KVL) used to determine?
The total voltage in a closed loop circuit
ExplanationKirchhoff's Voltage Law (KVL) is used to determine the total voltage in a closed loop circuit.
#14
What is the resistance of a superconductor at very low temperatures?
Zero
ExplanationThe resistance of a superconductor at very low temperatures is zero.
#15
What is the unit of electric charge?
Coulombs
ExplanationThe unit of electric charge is Coulombs.
#16
In a DC circuit, what happens to the voltage and current across a resistor connected in series?
Voltage remains constant, current varies
ExplanationIn a DC circuit, the voltage across a resistor connected in series remains constant, while the current varies.
#17
What is the unit of magnetic flux?
Weber
ExplanationThe unit of magnetic flux is Weber.