JEE Main
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- JEE Main
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- Physics
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- Experimental Physics
JEE Main · Physics · Experimental Physics
A galvanometer, with a scale divided into 150 equal divisions, has...
A galvanometer, with a scale divided into equal divisions, has current sensitivity of divisions per milliampere and voltage sensitivity of divisions per millivolt. Find shunt resistance for making an ammeter of .
Options
- A
- B
- C
- D
Correct answer
B.
Step-by-step solution
\left\right\} ⇒ {R}_{g} = \dfrac{Vg}{Ig} = 5Ω$
S = \dfrac{{I}_{g}{R}_{g}}{I – {I}_{g}} = 12.5 \times {10}^{– 3}Ω
S = \dfrac{{I}_{g}{R}_{g}}{I – {I}_{g}} = 12.5 \times {10}^{– 3}Ω