Question

In the experiment on finding the equivalent resistance of two resistors connected in parallel three students connected the Voltmeter in their circuits in the three ways X, Y and Z shown here.

The voltmeter has been correctly connected in.

• A. all the three cases
• B. cases Z and X only
• C. cases Y and Z only
• D. cases X and Y only

Answer 1

The correct option is

A

all the three cases

As we know that the voltmeter should be connected across the electrical components (resistor), so that we can calculate potential drop across the component using V=IR

$\therefore$ all the three cases