Question

find the answer of the followin

Answer 1

Answer:-

The least count of given milli- ammeter is 10 milli- ammeter.

Explanation:-

Here in this question, concept of least count is used. We have given a milli- ammeter and we have to find its least count. To find the required reading, we have to do following steps.

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Step 1:

Count the number of divisions between two consecutive readings.

The numbers of divisions after counting from 0 to 50 milli-ammeter comes out to be 5.

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Step 2:

Subtract two consecutive readings and divide it by number of divisions.

${\sf\leadsto \dfrac{50-0}{5}=\dfrac{50}{5}=\dfrac{\not50}{\not5}=10}$

${\sf\leadsto\dfrac{100-50}{5}=\dfrac{50}{5}=\dfrac{\not50}{\not5}=10}$

${\sf\leadsto\dfrac{150-100}{5}=\dfrac{50}{5}=\dfrac{\not50}{\not5}=10}$

${\sf\leadsto\dfrac{200-150}{5}=\dfrac{50}{5}=\dfrac{\not50}{\not5}=10}$

$\sf\leadsto\dfrac{250-200}{5}=\dfrac{50}{5}=\dfrac{\not50}{\not5}=10$

So the required least count of ammeter is 10 milli-ammeter.

Please note that you can also find the least count of voltmeter too by this method.

You don't need to perform this method for each reading, the answer will come out in 1st attempt, the rest are for explanation only.