Consider the two following statements $A$ and $B$, and identify the correct choice given in the answers :…
Consider the two following statements $A$ and $B$, and identify the correct choice given in the answers : $(A)$ Duddell's thermo galvanometer is suitable to measure direct current only. (B) Thermopile can measure temperature differences of the order of $10^{-3}{ }^{\circ} \mathrm{C}$.