Three voltmeters, all having different internal resistances are joined as shown in figure. When some potential difference is applied across A and B , their readings are V _ 1 , V _ 2 and V _ 3 . Choose the correct

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Correct answer: D. V _ 1 + V _ 2 = V _ 3

Let's consider the following diagram:

Three voltmeters, all having different internal resistances are joined as shown in figure. When some potential

According to the Kirchhoff's voltage law, the algebraic sum of the voltages in a closed loop is zero.

From the above figure, it can be written that

${V}_{1} + {V}_{2} - {V}_{3} = 0 ⇒ {V}_{1} + {V}_{2} = {V}_{3}$

Three voltmeters, all having different internal resistances are...

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