A sensitive galvanometer like a moving coil gavanometer can be converted into an ammeter or into a voltmeter by connecting a proper resistance to it . Then , which of the following statement is not true ?

Options

A. An ammeter is connected in series in a circuit and the pontential difference across it is small
B. An ammeter is connected in series in a circuit and the current through it is negligible
C. A voltmeter is connected in parallel in a circuit and the current through it is negligible
D. A voltmeter is connected in parallel a circuit the potential difference across it is maximum .

Answer

B

Explanation

`r=R((E )/(V)-1)`
`r=3( (91.08)/(0.6)-1)`
`therefore r = 2.4Omega`