Two galvanometers ' $\mathrm{G}_{1}$ ' and ' $\mathrm{G}_{2}$ ' require $2 \mathrm{~mA}$ and $3…

Two galvanometers ' $\mathrm{G}_{1}$ ' and ' $\mathrm{G}_{2}$ ' require $2 \mathrm{~mA}$ and $3 \mathrm{~mA}$ respectively to produce the same deflection. Then
  1. $\mathrm{G}_{1}$ and $\mathrm{G}_{2}$ are equally sensitive.
  2. $\mathrm{G}_{1}$ is more sensitive than $\mathrm{G}_{2}$.
  3. $\mathrm{G}_{1}$ is less sensitive than $\mathrm{G}_{2}$
  4. sensitivity of $G_{2}$ is $\frac{3}{2}$ times that of $G_{1}$.

Solution

G1 is more sensitive because it needs less current for a single deflection

Asked in: MHT CET 2020 (15 Oct Shift 2)

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