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To convert a 800mV range millivoltmeter ...

To convert a 800mV range millivoltmeter of resistance `40Omega`, itno a miliammeter of 100 mA range , the resistance to be connected as shunt is

A

`5Omega`

B

`10Omega`

C

`15Omega`

D

`20Omega`

Text Solution

Verified by Experts

The correct Answer is:
A
`Valpha R`
`Rightarrow (v_1)/(V_2)=(R_1)/(R-2)`
`therefore (3)/(4.5)= (2)/(R_2)`
`therefore R_2 = 3Omega`
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SIA PUBLICATION-CURRENT ELECTRICITY AND ALTERENATING CURRENT -MCQ
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