#1
What is the SI 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 used to store electrical charge.
#3
What does the term 'AC' stand for in electrical circuits?
Alternating Current
Explanation'AC' stands for Alternating Current in electrical circuits.
#4
In a series circuit with three resistors, how does increasing the resistance of one resistor affect the total resistance?
Increases
ExplanationIncreasing the resistance of one resistor in a series circuit increases the total resistance.
#5
What is the formula for calculating power in an electrical circuit?
All of the above
ExplanationThe formula for calculating power in an electrical circuit is 'All of the above'.
#6
What is the relationship between current, voltage, and resistance in an electrical circuit?
V = IR
ExplanationThe relationship between current (I), voltage (V), and resistance (R) in an electrical circuit is given by the formula V = IR.
#7
What is the difference between DC and AC voltage?
DC voltage flows in one direction, while AC voltage changes direction periodically.
ExplanationDC voltage flows in one direction, while AC voltage changes direction periodically.
#8
What is the formula for calculating resistance in a circuit?
R = V / I
ExplanationThe formula for calculating resistance in a circuit is R = V / I.
#9
What is the purpose of a diode in an electrical circuit?
To convert AC to DC
ExplanationA diode is used to convert Alternating Current (AC) to Direct Current (DC) in an electrical circuit.
#10
What is the function of a transistor in an electrical circuit?
To amplify or switch electronic signals
ExplanationA transistor is used to amplify or switch electronic signals in an electrical circuit.
#11
What is the purpose of a fuse in an electrical circuit?
To protect against overcurrent
ExplanationThe purpose of a fuse in an electrical circuit is to protect against overcurrent.
#12
What is the difference between a series and parallel circuit?
Series circuit has only one path for current, while parallel circuit has multiple paths.
ExplanationIn a series circuit, there is only one path for current, while in a parallel circuit, there are multiple paths.
#13
What is the purpose of a transformer in an electrical circuit?
To change the voltage level
ExplanationThe purpose of a transformer in an electrical circuit is to change the voltage level.
#14
What is the role of a ground wire in an electrical circuit?
To provide a path for current in case of a short circuit
ExplanationA ground wire provides a path for current in case of a short circuit in an electrical circuit.