EE Objectives – PL Questions with
complete solution 2025/2026
What are the minimum requirements to cause the flow of current?
A. voltage source, an ammeter, a conductor and insulator
B. voltage source, a switch and a resistor
C. voltage source and a conductor
D. voltage source, a conductor and an insulator - correct answer ✔C. voltage source and a conductor
Out of the following, select the best conductor of electricity
A. Graphite
B. China clay
C. Porcelain
D. None of these - correct answer ✔A. Graphite
Which of the following statement is correct?
A. the resistance does not play an important role in electrical engineering
B. the resistance of the wire does not depend on its material
C. the resistance of most of the materials is independent of the temperature
D. the resistance of the conductor is hindrance by which the conductor opposes the flow of current -
correct answer ✔D. the resistance of the conductor is hindrance by which the conductor opposes the
flow of current
,Resistance of the conductor increases when
A. its length increases
B. its area decreases
C. Both are and length increases
D. specific resistance is kept constant - correct answer ✔A. its length increases
The specific resistance is depends upon
A. the area of cross-section and the length of the conductor
B. the material of the conductor, its area of cross-section and length
C. the nature of the material
D. the area of cross-section of the conductor - correct answer ✔C. the nature of the material
The specific resistance is defined as
A. resistance of the conductor which has a length of 1 m and cross-sectional area of 1 m2 at 25 deg C
B. resistance of any conductor at 25 deg C
C. resistance of any conductor at 20 deg C
D. resistance of a conductor which has a length of 1 m and a cross-section at 1 cm2 at 25 deg C - correct
answer ✔A. resistance of the conductor which has a length of 1 m and cross-sectional area of 1 m2 at
25 deg C
The resistance of a conductor, when its temperature is increased
A. remain constant
,B. increases
C. varies
D. decreases - correct answer ✔B. increases
It was experimentally found by James Prescott Joule that the heat produced in a current carrying
conductor is proportional to
A. the square of current
B. square of resistance
C. the current
D. inversely proportional to time - correct answer ✔A. the square of current
The value of Joule's mechanical equivalent of heat, J is equal to
A. 4.2 cal/J
B. 2.4 J/cal
C. 4.2 J/cal
D. 4.2 J - correct answer ✔C. 4.2 J/cal
Temperature coefficient of a conductor is defined as the
A. increase in resistance per ohm per degree centigrade
B. increase in resistance per degree centigrade
C. increase in resistance per degree absolute
D. decrease in resistance per ohm per degree centigrade - correct answer ✔A. increase in resistance
per ohm per degree centigrade
, When current flows in a conductor heat is produced because
A. heat is proportional to the square of the current
B. of electronic collision
C. of interatomic collision
D. of Joule's law - correct answer ✔C. of interatomic collision
Heating effect of current has undesirable side effect
A. electric oven
B. electric iron
C. immersion heater
D. vacuum cleaner - correct answer ✔D. vacuum cleaner
The resistance of the carbon when its filament temperature is decreased
A. increases
B. decreases
C. remains the same
D. increase enormously - correct answer ✔A. increases
The curve representing ohm's law is
A. a parabola
complete solution 2025/2026
What are the minimum requirements to cause the flow of current?
A. voltage source, an ammeter, a conductor and insulator
B. voltage source, a switch and a resistor
C. voltage source and a conductor
D. voltage source, a conductor and an insulator - correct answer ✔C. voltage source and a conductor
Out of the following, select the best conductor of electricity
A. Graphite
B. China clay
C. Porcelain
D. None of these - correct answer ✔A. Graphite
Which of the following statement is correct?
A. the resistance does not play an important role in electrical engineering
B. the resistance of the wire does not depend on its material
C. the resistance of most of the materials is independent of the temperature
D. the resistance of the conductor is hindrance by which the conductor opposes the flow of current -
correct answer ✔D. the resistance of the conductor is hindrance by which the conductor opposes the
flow of current
,Resistance of the conductor increases when
A. its length increases
B. its area decreases
C. Both are and length increases
D. specific resistance is kept constant - correct answer ✔A. its length increases
The specific resistance is depends upon
A. the area of cross-section and the length of the conductor
B. the material of the conductor, its area of cross-section and length
C. the nature of the material
D. the area of cross-section of the conductor - correct answer ✔C. the nature of the material
The specific resistance is defined as
A. resistance of the conductor which has a length of 1 m and cross-sectional area of 1 m2 at 25 deg C
B. resistance of any conductor at 25 deg C
C. resistance of any conductor at 20 deg C
D. resistance of a conductor which has a length of 1 m and a cross-section at 1 cm2 at 25 deg C - correct
answer ✔A. resistance of the conductor which has a length of 1 m and cross-sectional area of 1 m2 at
25 deg C
The resistance of a conductor, when its temperature is increased
A. remain constant
,B. increases
C. varies
D. decreases - correct answer ✔B. increases
It was experimentally found by James Prescott Joule that the heat produced in a current carrying
conductor is proportional to
A. the square of current
B. square of resistance
C. the current
D. inversely proportional to time - correct answer ✔A. the square of current
The value of Joule's mechanical equivalent of heat, J is equal to
A. 4.2 cal/J
B. 2.4 J/cal
C. 4.2 J/cal
D. 4.2 J - correct answer ✔C. 4.2 J/cal
Temperature coefficient of a conductor is defined as the
A. increase in resistance per ohm per degree centigrade
B. increase in resistance per degree centigrade
C. increase in resistance per degree absolute
D. decrease in resistance per ohm per degree centigrade - correct answer ✔A. increase in resistance
per ohm per degree centigrade
, When current flows in a conductor heat is produced because
A. heat is proportional to the square of the current
B. of electronic collision
C. of interatomic collision
D. of Joule's law - correct answer ✔C. of interatomic collision
Heating effect of current has undesirable side effect
A. electric oven
B. electric iron
C. immersion heater
D. vacuum cleaner - correct answer ✔D. vacuum cleaner
The resistance of the carbon when its filament temperature is decreased
A. increases
B. decreases
C. remains the same
D. increase enormously - correct answer ✔A. increases
The curve representing ohm's law is
A. a parabola
