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Questions and Answers
What is the ratio of the equivalent resistance of n identical resistances connected in series and in parallel?
What is the ratio of the equivalent resistance of n identical resistances connected in series and in parallel?
- 1/n
- 1/n^2
- n^2 (correct)
- n
What is the equivalent resistance of resistors R1 and R2 connected in series?
What is the equivalent resistance of resistors R1 and R2 connected in series?
- R1R2 / (R1 + R2)
- (R1R2) / (R1 + R2)
- R1 - R2
- R1 + R2 (correct)
What is the condition for a Wheatstone bridge to be balanced?
What is the condition for a Wheatstone bridge to be balanced?
- R1 + R2 = R3 + R4
- R1/R3 = R2/R4
- R1R2 = R3R4
- R1/R2 = R3/R4 (correct)
What is the equivalent resistance of a bundle of n identical resistors each of resistance R, connected in parallel?
What is the equivalent resistance of a bundle of n identical resistors each of resistance R, connected in parallel?
What is the condition for points to have the same potential in a network?
What is the condition for points to have the same potential in a network?
What happens when a network is folded about the parallel axis of symmetry?
What happens when a network is folded about the parallel axis of symmetry?
What is the characteristic of the axis AA' in the given network?
What is the characteristic of the axis AA' in the given network?
Which of the following points are at the same potential in the given network?
Which of the following points are at the same potential in the given network?
What is the equivalent resistance of two 10Ω resistors connected in parallel?
What is the equivalent resistance of two 10Ω resistors connected in parallel?
In a balanced wheatstone bridge, what is the current through the resistor connected between the midpoint of the two arms?
In a balanced wheatstone bridge, what is the current through the resistor connected between the midpoint of the two arms?
What is not a characteristic of points lying on the parallel axis of symmetry?
What is not a characteristic of points lying on the parallel axis of symmetry?
What is the equivalent resistance of a infinite network of 1Ω resistors connected as shown in the figure?
What is the equivalent resistance of a infinite network of 1Ω resistors connected as shown in the figure?
What is the equivalent resistance of a circuit with two resistors R1 and R2 connected in series?
What is the equivalent resistance of a circuit with two resistors R1 and R2 connected in series?
In a circuit with four resistors connected to form the sides of a rectangle, what is the method used to find the equivalent resistance?
In a circuit with four resistors connected to form the sides of a rectangle, what is the method used to find the equivalent resistance?
What is the main advantage of using a potentiometer over a voltmeter in measuring the emf of a cell?
What is the main advantage of using a potentiometer over a voltmeter in measuring the emf of a cell?
What is the purpose of the supplier battery or driver cell in a potentiometer circuit?
What is the purpose of the supplier battery or driver cell in a potentiometer circuit?
What is the function of the galvanometer in a potentiometer circuit?
What is the function of the galvanometer in a potentiometer circuit?
What is the material used to make the potentiometer wire?
What is the material used to make the potentiometer wire?
Why is the potentiometer considered an ideal instrument for measuring the potential difference of a cell?
Why is the potentiometer considered an ideal instrument for measuring the potential difference of a cell?
What is the process of determining the potential gradient experimentally known as?
What is the process of determining the potential gradient experimentally known as?
What is the purpose of increasing the length of the potentiometer wire?
What is the purpose of increasing the length of the potentiometer wire?
What is the characteristic of a potentiometer that does not draw any current from the source of known emf?
What is the characteristic of a potentiometer that does not draw any current from the source of known emf?
What is the relationship between the sensitivity of a potentiometer and its potential gradient?
What is the relationship between the sensitivity of a potentiometer and its potential gradient?
What is the advantage of a potentiometer over a voltmeter?
What is the advantage of a potentiometer over a voltmeter?
What is the primary reason for ensuring that the diameter of potentiometer wire is uniform everywhere?
What is the primary reason for ensuring that the diameter of potentiometer wire is uniform everywhere?
What is the factor that the potential gradient of a potentiometer wire directly depends on?
What is the factor that the potential gradient of a potentiometer wire directly depends on?
What is the purpose of connecting all higher potential points of primary and secondary circuits together at point A?
What is the purpose of connecting all higher potential points of primary and secondary circuits together at point A?
What is the requirement for the specific resistance of the potentiometer wire?
What is the requirement for the specific resistance of the potentiometer wire?
What is the effect of changing the diameter of the potentiometer wire on the potential gradient?
What is the effect of changing the diameter of the potentiometer wire on the potential gradient?
What happens when the potential difference across the galvanometer is greater than the emf of the unknown cell?
What happens when the potential difference across the galvanometer is greater than the emf of the unknown cell?
