Question

While experimentally verifying Ohm's Law a student observed that the pointer of the voltmeter coincide with 15 th division when the voltmeter has a least count of 0.05V. Find the observed reading of voltmeter.

Answer 1

Answer:

Least count of any device of measurement is the least reading it can take or measured by the device.

Thus, LC = Value in n divisions/ n

In this case LC = 0.05v and the pointer (n) is at 15th division.

Therefore, the observed reading of the voltmeter = 0.05 X 15 = 0.75 volts.

Answer 2

Answer:

Explanation:

Least count can be defined as the least value the device can measure.

Here it is given that least count of the voltmeter is 0.05v

So,the reading of voltmeter =least count × the division

0.05 × 15=0.75v

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