Chapter 21, Problem 26CQ

To determine

(a)

The point to which a voltmeter is connected to measure the potential difference of the voltage source in the given figure.

Answer to Problem 26CQ

  $a\text{ and h,i and j,b and g,c and f}\text{.}$

Explanation of Solution

Given information:

The given figure is

  

Introduction:

Ammeter is connected in series in the circuit to measure the current.

Voltmeter is connected in parallel in the circuit to measure the voltage.

Ammeter is a device which is used to measure the current in the circuit and is connected in series in the circuit.

It is having internal impedance whose value is zero.

Voltmeter is connected in parallel in the circuit to measure the voltage.

It is having internal impedance whose value is infinity.

In order to measure a potential difference of the voltage source the voltmeter must be connected between the points $a\text{ and h,i and j,b and g,c and f}\text{.}$

Conclusion:

All the currents going into the junction are positive.

To determine

(b)

The point to which a voltmeter is connected to measure the potential difference across ${\text{R}}_1$ in the given figure.

Answer to Problem 26CQ

  $a\text{ and h,i and j,b and g,c and f}\text{.}$

Explanation of Solution

Given information:

The given figure is

  

Introduction:

Ammeter is connected in series in the circuit to measure the current.

Voltmeter is connected in parallel in the circuit to measure the voltage.

Ammeter is a device which is used to measure the current in the circuit and is connected in series in the circuit.

It is having internal impedance whose value is zero.

Voltmeter is connected in parallel in the circuit to measure the voltage.

It is having internal impedance whose value is infinity.

In order to measure a potential difference across ${\text{R}}_1$ the voltmeter must be connected between the points $a\text{ and h,i and j,b and g,c and f}\text{.}$

Conclusion:

The point to which a voltmeter is connected to measure the potential difference across ${\text{R}}_1$ in the given figure are $a\text{ and h,i and j,b and g,c and f}\text{.}$

To determine

(c)

The point to which a voltmeter is connected to measure the potential difference across ${\text{R}}_2$ in the given figure.

Answer to Problem 26CQ

  $\text{c and d}\text{.}$

Explanation of Solution

Given information:

The given figure is

  

Introduction:

Ammeter is connected in series in the circuit to measure the current.

Voltmeter is connected in parallel in the circuit to measure the voltage.

Ammeter is a device which is used to measure the current in the circuit and is connected in series in the circuit.

It is having internal impedance whose value is zero.

Voltmeter is connected in parallel in the circuit to measure the voltage.

It is having internal impedance whose value is infinity.

In order to measure a potential difference across ${\text{R}}_2$ the voltmeter must be connected between the points $\text{c and d}\text{.}$

Conclusion:

The point to which a voltmeter is connected to measure the potential difference across ${\text{R}}_2$ in the given figure is $\text{c and d}\text{.}$

To determine

(d)

The point to which a voltmeter is connected to measure the potential difference across ${\text{R}}_3$ in the given figure.

Answer to Problem 26CQ

  $\text{e and f}\text{.}$

Explanation of Solution

Given information:

The given figure is

  

Introduction:

Ammeter is connected in series in the circuit to measure the current.

Voltmeter is connected in parallel in the circuit to measure the voltage.

Ammeter is a device which is used to measure the current in the circuit and is connected in series in the circuit.

It is having internal impedance whose value is zero.

Voltmeter is connected in parallel in the circuit to measure the voltage.

It is having internal impedance whose value is infinity.

In order to measure a potential difference across ${\text{R}}_3$ the voltmeter must be connected between the points $\text{e and f}\text{.}$

Conclusion:

The point to which a voltmeter is connected to measure the potential difference across ${\text{R}}_3$ in the given figure is $\text{e and f}\text{.}$

To determine

(e)

The point to which a voltmeter is connected to measure the potential difference across ${\text{R}}_2{\text{ and R}}_3$ in the given figure.

Answer to Problem 26CQ

  $a\text{ and h,i and j,b and g,c and f}\text{.}$

Explanation of Solution

Given information:

The given figure is

  

Introduction:

Ammeter is connected in series in the circuit to measure the current.

Voltmeter is connected in parallel in the circuit to measure the voltage.

Ammeter is a device which is used to measure the current in the circuit and is connected in series in the circuit.

It is having internal impedance whose value is zero.

Voltmeter is connected in parallel in the circuit to measure the voltage.

It is having internal impedance whose value is infinity.

In order to measure a potential difference across ${\text{R}}_2{\text{ and R}}_3$ the voltmeter must be connected between the points $a\text{ and h,i and j,b and g,c and f}\text{.}$

Conclusion:

The point to which a voltmeter is connected to measure the potential difference across ${\text{R}}_2{\text{ and R}}_3$ in the given figure are $a\text{ and h,i and j,b and g,c and f}\text{.}$