Question 81: Current Electricity

Question

The value of current I in the electrical circuit as given below, when potential at A is equal to the potential at B, will be _______ A.

Accepted Answer

$$\begin{aligned}
& \mathrm{V}_{\mathrm{A}}=\mathrm{V}_{\mathrm{B}} \Rightarrow 	ext { the bridge is balanced } \
& \Rightarrow \frac{10}{\mathrm{R}}=\frac{20}{40} \
& \mathrm{R}=20 \Omega \
& \mathrm{I}=\frac{40}{20}=2 \mathrm{~A}
\end{aligned}$$

Current Electricity

The value of current I in the electrical circuit as given below, when potential at A is equal to the potential at B, will be _______ A.

Integer / Numeric Answer Type