Chapter 22.1, Problem 10PP

To determine

To draw: Circuit with voltmeter across resistor.

Explanation of Solution

Given:

The series circuits given are,

  

Voltage of the battery, $V=60\text{V}$

Resistance of resistor, $R=12.5\Omega$

And

  

Voltage of the battery, $V=4.5\text{V}$

Ammeter reading, $I=85\text{mA}$

Series Circuit:

A circuit in which one or more resistors are connected one by one in a chain making a single path is a series circuit.

The current through all the resistors is same and the total voltage is distributed to all the resistors.

The series circuit with voltmeter across resistor are shown below,

  

Here, voltmeter reading is 60 V.

  

The voltmeter is always connected in parallel to resistor to measure the voltage. It can’t be connected in series because it has very high resistance which can block the current.