TS EAMCET · Physics · Current Electricity
Four resistors \(A, B, C\) and \(D\) form a Wheatstones bridge. The bridge is balanced, when \(C=100 \Omega\). If \(A\) and \(B\) are interchanged, the bridge balances for \(C=121 \Omega\). The value of \(D\) is
- A \(10 \Omega\)
- B \(100 \Omega\)
- C \(110 \Omega\)
- D \(120 \Omega\)
Answer & Solution
Correct Answer
(C) \(110 \Omega\)
Step-by-step Solution
Detailed explanation
Balancing condition of bridge balance \(\begin{aligned} \frac{A}{B} & =\frac{100}{x} \\ \frac{B}{A} & =\frac{121}{x} \\ \therefore \quad \frac{100}{x} & =\frac{x}{121} \\ x^2 & =12100 \\ x & =110 \Omega\end{aligned}\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A particle starts from rest. Its acceleration versus time is as shown in the figure. The maximum speed of the particle will be
TS EAMCET 2022 Medium - If the earth shrinks to of its original volume, while maintaining the same mass, then the duration of the day will beTS EAMCET 2021 Medium
- The ratio of maximum to minimum wavelength in Balmer series of an hydrogenic atom isTS EAMCET 2020 Easy
- In the circuit shown, the heat produced in \(5 \Omega\) resistance due to current through is \(50 \mathrm{~J} / \mathrm{s}\). Then, the heat generated per second in \(2 \Omega\) resistance is
TS EAMCET 2014 Easy - A particle aimed at a target, projected with an angle \(15^{\circ}\) with the horizontal is short of the target by \(10 \mathrm{~m}\). If projected with an angle of \(45^{\circ}\) is away from the target by \(10 \mathrm{~m}\), then the angle of projection to hit the target isTS EAMCET 2020 Hard
- A capacitor is fully charged with a battery and then disconnected. A dielectric is then inserted into the capacitor. How do charges on surface of the dielectric and outer surface of the plates of the capacitor would change respectively?TS EAMCET 2020 Medium
More PYQs from TS EAMCET
- Two unit negative charges are placed on a straight line. A positive charge \(q\) is placed exactly at the mid point between these unit charges. If the system of these three charges is in equilibrium, the value of \(q\) (in \(\mathrm{C}\) ) isTS EAMCET 2007 Medium
- A particle is moving in a circle of radius \(5 \mathrm{~cm}\) with uniform speed and completes the circle in \(5 \mathrm{~s}\). What is the magnitude of linear acceleration?TS EAMCET 2021 Easy
- The de-Broglie wavelength of the electron in the first Bohr orbit of the hydrogen atom isTS EAMCET 2020 Easy
- A capacitor \(50 \mu \mathrm{F}\) is connected to a power source \(V=220 \sin 50 t\) ( \(V\) in volt, \(t\) in second). The value of rms current (in ampere)TS EAMCET 2014 Medium
- Currents flowing in each of the following circuits \(A\) and \(B\) respectively are
TS EAMCET 2009 Easy - A toroid core has inner radius of \(0.24 \mathrm{~m}\) and outer radius of \(0.26 \mathrm{~m}\). A current of 10 A flows through the wire having 2500 turns around it. Find the magnetic field inside the core of the toroid.TS EAMCET 2022 Medium