MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Ohm's Law in Scalar Form

A voltmeter h...

Question

A voltmeter has a least count of 0.05 volt. while doing ohm's law experiment a student observed that the pointer of the voltmeter coincides with 15th division. The obsserved readingis:

A

0.75V

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

0.075V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

7.5V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

75V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 0.75V
Voltage Reading = Least count $\times$ No.of Divisions
$V = 0.05 \times 15 = 0.75 V$
The reading of voltmeter is $0.75 V$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Question-based on practicals:
While experimentally verifying Ohm's Law, a student observed that the pointer of the voltmeter coincide with the 15th division when the voltmeter has a least count of 0.05V. Find the observed reading of the voltmeter. Answer with full explanations. (2 marks)
I am not able to solve this!!

Q. While performing an experiment by using a given voltmeter, a student observes that the needle indicates 12 divisions on the voltmeter scale. If the voltmeter scale has 5 divisions between 0 and 1 V, then what is the value corresponding to 12 divisions?

Q. While performing an experiment to determine the equivalent resistance of two resistors connected in parallel, a student observes the pointer of voltmeter at position X when the key is 'off' and the same pointer at position Y when the key is 'on'.

The correct voltmeter reading is :
(1) 0.2 V
(2) 2 V
(3) 2.2 V
(4) 1.8 V

Q. In a voltmeter there are 20 divisions between the 0 mark and 0.5 volt mark.Calculate the least count of the voltmeter

Q. A student finds that there are 20 divisions between the 0 mark and 1 V mark of a voltmeter. What is the least count of this voltmeter?
(1) 0.50 V
(2) 0.02 V
(3) 0.2 V
(4) 0.05 V

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Ohm's Law in Scalar Form

PHYSICS

Watch in App

explore_more_icon

Explore more

Ohm's Law in Scalar Form

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon