Welcome to the 12th Class Physics Chapter 13 MCQs Practice and Quiz Tests. We are presenting you with top MCQ questions from the 12th Class Physics Chapter 13 Current Electricity.
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Electric current is measured in:
a) Volts
b) Amperes
c) Ohms
d) Watts
The SI unit of electric charge is:
a) Coulomb
b) Volt
c) Ohm
d) Ampere
The flow of electric charge through a conductor is called:
a) Voltage
b) Current
c) Resistance
d) Capacitance
What is the formula for calculating electric current (I) in a circuit?
a) I = V/R
b) I = R/V
c) I = V * R
d) I = Q/t
In which direction does conventional current flow?
a) From positive to negative
b) From negative to positive
c) In both directions simultaneously
d) In a random direction
The device used to measure electric current is called a/an:
a) Voltmeter
b) Ammeter
c) Ohmmeter
d) Galvanometer
The resistance of a conductor depends on its:
a) Length
b) Cross-sectional area
c) Material
d) All of the above
Which of the following materials has the highest electrical conductivity?
a) Copper
b) Aluminum
c) Silver
d) Iron
The unit of resistance is:
a) Ohm
b) Volt
c) Ampere
d) Coulomb
Ohm’s law relates which of the following quantities?
a) Current and voltage
b) Voltage and power
c) Current and power
d) Resistance and power
What is the relationship between resistance and current in a circuit, according to Ohm’s
law?
a) R = V/I
b) R = I/V
c) R = V * I
d) R = I^2
The device used to control the current in a circuit is called a:
a) Resistor
b) Capacitor
c) Transistor
d) Inductor
Which of the following materials is a good insulator?
a) Copper
b) Aluminum
c) Glass
d) Silver
The phenomenon in which a material allows the flow of electric current is called:
a) Conduction
b) Insulation
c) Resistance
d) Capacitance
Which of the following materials is a good conductor?
a) Glass
b) Wood
c) Plastic
d) Copper
The total resistance of resistors in series is:
a) The sum of the individual resistances
b) The average of the individual resistances
c) The reciprocal of the individual resistances
d) The square of the individual resistances
The total resistance of resistors in parallel is:
a) The sum of the individual resistances
b) The average of the individual resistances
c) The reciprocal of the sum of the reciprocals of the individual resistances
d) The product of the individual resistances
The property of a material that opposes the flow of electric current is called:
a) Electric potential
b) Electric charge
c) Electric resistance
d) Electric capacitance
Kirchhoff’s first law is also known as:
a) The law of currents
b) The law of voltages
c) The law of conservation of charge
d) The law of conservation of energy
The power consumed by an electrical device can be calculated using the formula:
a) P = VI
b) P = V^2/R
c) P = I^2R
d) All of the above
Which of the following statements is true regarding electric circuits?
a) In a series circuit, the current is the same through each resistor.
b) In a parallel circuit, the voltage is the same across each resistor.
c) In a series circuit, the total resistance is the sum of the individual resistances.
d) All of the above
The process of converting electrical energy into other forms of energy is called:
a) Resistance
b) Induction
c) Capacitance
d) Electromotive force
The unit of electric power is:
a) Volt
b) Watt
c) Ampere
d) Ohm
Which of the following statements is true regarding electric circuits?
a) In a series circuit, the total resistance is the sum of the individual resistances.
b) In a parallel circuit, the total current is the sum of the individual currents.
c) In a series circuit, the voltage is the same across each resistor.
d) All of the above
What is the formula for calculating electric power (P) in a circuit?
a) P = VI
b) P = V^2/R
c) P = I^2R
d) P = R/I
What is the electrical term for the opposition to the flow of electric current through a circuit component?
a) Capacitance
b) Voltage
c) Resistance
d) Conductance
Which of the following devices is used to store electric charge?
a) Resistor
b) Capacitor
c) Diode
d) Transistor
In a closed circuit, if the resistance increases, what happens to the current?
a) Increases
b) Decreases
c) Remains the same
d) Becomes zero
In a circuit, if the voltage across a resistor remains constant, what happens to the current if the resistance increases?
a) Increases
b) Decreases
c) Remains the same
d) Becomes zero
The total power consumed by resistors in parallel is:
a) The sum of the individual powers
b) The average of the individual powers
c) The reciprocal of the sum of the reciprocals of the individual powers
d) The product of the individual powers
The property of a material that allows it to store an electric charge is called:
a) Electric potential
b) Electric charge
c) Electric resistance
d) Electric capacitance
What is the electrical term for the rate of flow of electric charge in a circuit?
a) Voltage
b) Power
c) Current
d) Resistance
The process of converting other forms of energy into electrical energy is called:
a) Resistance
b) Induction
c) Capacitance
d) Electromotive force
Which of the following materials is a good conductor?
a) Copper
b) Glass
c) Rubber
d) Plastic
The unit of electric charge is:
a) Volt
b) Ampere
c) Ohm
d) Coulomb
Which of the following materials has the highest electrical resistance?
a) Copper
b) Aluminum
c) Silver
d) Tungsten
The device used to control the flow of current in a circuit is called a:
a) Resistor
b) Capacitor
c) Transistor
d) Diode
The total resistance of resistors in series is:
a) The sum of the individual resistances
b) The average of the individual resistances
c) The reciprocal of the individual resistances
d) The product of the individual resistances
The total resistance of resistors in parallel is:
a) The sum of the individual resistances
b) The average of the individual resistances
c) The reciprocal of the sum of the reciprocals of the individual resistances
d) The product of the individual resistances
Which of the following materials has the lowest electrical conductivity?
a) Copper
b) Aluminum
c) Silver
d) Rubber
The unit of electric power is:
a) Volt
b) Watt
c) Ampere
d) Ohm
Kirchhoff’s first law is also known as:
a) The law of currents
b) The law of voltages
c) The law of conservation of charge
d) The law of conservation of energy
In a closed circuit, if the resistance increases, what happens to the current?
a) Increases
b) Decreases
c) Remains the same
d) Becomes zero
In a circuit, if the voltage across a resistor remains constant, what happens to the current if the resistance increases?
a) Increases
b) Decreases
c) Remains the same
d) Becomes zero
The total power consumed by resistors in parallel is:
a) The sum of the individual powers
b) The average of the individual powers
c) The reciprocal of the sum of the reciprocals of the individual powers
d) The product of the individual powers
The property of a material that allows it to store an electric charge is called:
a) Electric potential
b) Electric charge
c) Electric resistance
d) Electric capacitance
What is the electrical term for the rate of flow of electric charge in a circuit?
a) Voltage
b) Power
c) Current
d) Resistance
The process of converting other forms of energy into electrical energy is called:
a) Resistance
b) Induction
c) Capacitance
d) Electromotive force
Which of the following materials is a good conductor?
a) Copper
b) Glass
c) Rubber
d) Plastic
The unit of electric charge is:
a) Volt
b) Ampere
c) Ohm
d) Coulomb
Which of the following materials has the highest electrical resistance?
a) Copper
b) Aluminum
c) Silver
d) Tungsten
The device used to control the flow of current in a circuit is called a:
a) Resistor
b) Capacitor
c) Transistor
d) Diode
The total resistance of resistors in series is:
a) The sum of the individual resistances
b) The average of the individual resistances
c) The reciprocal of the individual resistances
d) The product of the individual resistances
The total resistance of resistors in parallel is:
a) The sum of the individual resistances
b) The average of the individual resistances
c) The reciprocal of the sum of the reciprocals of the individual resistances
d) The product of the individual resistances
Which of the following materials has the lowest electrical conductivity?
a) Copper
b) Aluminum
c) Silver
d) Rubber
The unit of electric power is:
a) Volt
b) Watt
c) Ampere
d) Ohm
Kirchhoff’s first law is also known as:
a) The law of currents
b) The law of voltages
c) The law of conservation of charge
d) The law of conservation of energy
In a closed circuit, if the resistance increases, what happens to the current?
a) Increases
b) Decreases
c) Remains the same
d) Becomes zero
In a circuit, if the voltage across a resistor remains constant, what happens to the current if the resistance increases?
a) Increases
b) Decreases
c) Remains the same
d) Becomes zero
The total power consumed by resistors in parallel is:
a) The sum of the individual powers
b) The average of the individual powers
c) The reciprocal of the sum of the reciprocals of the individual powers
d) The product of the individual powers
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