Since potential can have any value you want depending on the choice of the reference level of zero potential, how does a voltmeter know what to read when you connect it between two points?
Solution 4DQ Step 1: We use voltmeter to find the potential difference between any two points. When we use a voltmeter, we can see that there are two probes attached to the measuring instrument. One is red in colour and another is black. Usually the black probe of a voltmeter is connected to ground which is set as the zero potential reference. Thus when we connect between two points in a circuit, the one end is connected to ground and we can get the potential difference of that point with respect to the ground.
Textbook: University Physics
Author: Hugh D. Young, Roger A. Freedman
This full solution covers the following key subjects: potential, any, connect, depending, level. This expansive textbook survival guide covers 26 chapters, and 2929 solutions. This textbook survival guide was created for the textbook: University Physics, edition: 13. The full step-by-step solution to problem: 4DQ from chapter: 23 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. University Physics was written by and is associated to the ISBN: 9780321675460. The answer to “Since potential can have any value you want depending on the choice of the reference level of zero potential, how does a voltmeter know what to read when you connect it between two points?” is broken down into a number of easy to follow steps, and 34 words. Since the solution to 4DQ from 23 chapter was answered, more than 342 students have viewed the full step-by-step answer.