For designing a voltmeter of range $50 \mathrm{~V}$ and an ammeter of range $10 \mathrm{~mA}$ using a galvanometer which has a coil of resistance $54 \Omega$ showing a full scale deflection for $1 \mathrm{~mA}$ as in figure. (A) for voltmeter $R \approx 50 \mathrm{k} \Omega$ (B) for ammeter $\mathrm{r} \approx 0.2 \Omega$ (C) for ammeter $\mathrm{r}=6 \Omega$ (D) for voltmeter $R \approx 5 \mathrm{k} \Omega$ (E) for voltmeter $R \approx 500 \Omega$ Choose the correct answer from the options given below:

Question

For designing a voltmeter of range $50 \mathrm{~V}$ and an ammeter of range $10 \mathrm{~mA}$ using a galvanometer which has a coil of resistance $54 \Omega$ showing a full scale deflection for $1 \mathrm{~mA}$ as in figure.

(A) for voltmeter $R \approx 50 \mathrm{k} \Omega$

(B) for ammeter $\mathrm{r} \approx 0.2 \Omega$

(C) for ammeter $\mathrm{r}=6 \Omega$

(D) for voltmeter $R \approx 5 \mathrm{k} \Omega$

(E) for voltmeter $R \approx 500 \Omega$

Choose the correct answer from the options given below:

$(\mathrm{A})$ and $(\mathrm{C})$

(A) and (B)

Solution

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