Question

the following instruments are available in a laboratory :milliammeter A1 of range o-300m A and least count 10mA milliammeter A2 range 0-200mA
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Question From class 10 Chapter ELECTRICITY

The following apparatus is available in a laboratory : <br> Battery : adjustable from 0 to

<br> Resistors :

and

<br> Ammeters :

of range 0 to 3 A , least count

<br>

of range 0 to 1 A , least count

<br> Voltmeters :

of range 0 to 10 V , least count

<br>

of range 0 to 5 V , least count

<br> Which is the best combination of votmeter and ammeter for finding the equivalent resistance of the resistors in series ?

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Text Solution

Solution :

Equivalent resistance

<br> Maximum current to be measured

<br> Maximum voltage to be measured

<br> Ammeter

and voltmeter

fulfil these requirements of measuring current and voltage. Apart from this, these two instruments have maximum accuracy due to their smaller least counts

.