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Inter Conversion between Standard and Normal Forms

What is the l...

Question

What is the least count of the given micro-ammeter?

A

2 micro A

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B

0.2 micro A

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C

4 micro A

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D

20 micro A

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Solution

The correct option is C 4 micro A
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Q. The following apparatus is available in the school laboratory:

Battery	:	4.5 V
Rheostat	:	Varies battery voltage from 0 to 4.5 V
Resistors	:	1 Ω and 2 Ω
Ammeters	:	A₁ of range 0 to 1 A; Least count 0.05 A
	:	A₂ of range 0 to 3 A; Least count 0.1 A
Voltmeters	:	V₁ of range 0 to 5 V; Least count 0.1 V
	:	V₂ of range 0 to 10 V; Least count 0.5 V

The best combination of ammeter and voltmeter for finding the resultant resistance of the two given resistors connected in series would be:
(1) ammeter A₁ and voltmeter V₁
(2) ammeter A₁ and voltmeter V₁
(3) ammeter A₂ and voltmeter V₁
(4) ammeter A₂ and voltmeter V₂

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