Q. 15

# The current in a

Answer :

0.4V

Given,

Ammeter reading of current, i1 in the 1st case=1.75A

Ammeter reading of current, i2 in the 2nd case=2.75A

Voltmeter reading for current i1, V1=14.4V

Voltmeter reading for current i2, V2=22.4V

Formula used

The ammeter shows the accurate reading while the voltmeter deviate from showing the corresponding potential difference value due to the presence of Zero error, Ve.

Hence the original potential difference can be calculated as, Vo Where V is the shown voltage in the defected voltmeter.

We also know that the potential difference across the conductor is, V Where R is the resistance of the conductor

Solution:

For the 1st and 2nd case, the relation between absolute current and voltage can be written, from eqn.2, as And By dividing these expressions, we get The terms Vo1 and Vo2 in above equation can be replaced by eqn.1 as By substituting the given values in the above expression, we get Or, Or, Or, Or, Hence the zero error associated with the measurement is 0.4V.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation view all courses RELATED QUESTIONS :

<span lang="EN-USPhysics - Exemplar

<span lang="EN-USPhysics - Exemplar

Let there be n rePhysics - Exemplar

<span lang="EN-USPhysics - Exemplar

<span lang="EN-USPhysics - Exemplar

Two cells of emf Physics - Exemplar

<span lang="EN-USPhysics - Exemplar

<span lang="EN-USPhysics - Exemplar

Kirchhoff ’s juncPhysics - Exemplar