In a Wheatstone bridge, $P = 10\ \Omega$, $Q = 30\ \Omega$, $R = 15\ \Omega$. Find the value of $S$ for balance.
In a Wheatstone bridge, $P = 10\ \Omega$, $Q = 30\ \Omega$, $R = 15\ \Omega$. Find the value of $S$ for balance.
1 Answer
VAVidaara Admin
✓ Vidaara Team
✓ Accepted
· 3mo ago
▲ 35
At balance: $\dfrac{P}{Q} = \dfrac{R}{S}$
$$S = \frac{QR}{P} = \frac{30 \times 15}{10} = 45\ \Omega$$
Log in to post your own answer or join the discussion.
Discussion (3)
TS
Tip for others: you can verify the answer quickly by checking the units.
NA
Does this approach generalise to the JEE Advanced version of this question?
VA
Great discussion here. If you want more practice on this concept, check the related questions in this category.