TS EAMCET · Physics · Current Electricity
Two cells \(A\) and. \(B\) are connected in the secondary circuit of a potentiometer one at a time and the balancing length are respectively \(400 \mathrm{~cm}\) and \(440 \mathrm{~cm}\). The emf of the cell \(A\) is 1.08 volt. The emf of the second cell \(B\) in volts is
- A \(1.08\)
- B \(1.188\)
- C \(11.88\)
- D \(12.8\)
Answer & Solution
Correct Answer
(B) \(1.188\)
Step-by-step Solution
Detailed explanation
\(\begin{array}{lc}\frac{E_1}{E_2}=\frac{l_1}{l_2} & \\ \Rightarrow & \frac{1.08}{E_2}=\frac{400}{440} \\ \Rightarrow & E_2=\frac{440 \times 1.08}{400}=1.188 \mathrm{~V}\end{array}\)
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
- Consider the motion of a particle described by \(x=a \cos t, y=a \sin t\) and \(z=t\). The trajectory traced by the particle as a function of time isTS EAMCET 2017 Easy
- A particle of mass \(1 \times 10^{-26} \mathrm{~kg}\) and charge \(1.6 \times 10^{-19} \mathrm{C}\) travelling with a velocity \(1.28 \times 10^6 \mathrm{~ms}^{-1}\) along the positive \(X\)-axis enters a region in which a uniform electric field \(\mathbf{E}\) and a uniform magnetic field of induction \(\mathbf{B}\) are present. If \(\mathbf{E}=-102.4 \times 10^3 \hat{\mathbf{k}} \mathrm{NC}^{-1}\) and \(\mathbf{B}=8 \times 10^{-2} \hat{\mathbf{j}} \mathrm{Wbm}^{-2}\) the direction of motion of the particles isTS EAMCET 2005 Medium
- Two uniform strings \(A\) and \(B\) made of steel are made to vibrate under the same tension. If the first overtone of \(A\) is equal to the second overtone of \(B\) and if the radius of \(A\) is twice that of \(B\), the ratio of the lengths of the strings is :TS EAMCET 2003 Medium
- A moving coil galvanometer of resistance \(100 \Omega\) is used as an ammeter using a resistance \(0.1 \Omega\). The maximum deflection current in the galvanometer is \(100 \mu \mathrm{A}\). Find the minimum current in the circuit, so that ammeter shows maximum deflection?TS EAMCET 2020 Medium
- An electron in n-region of a p-n junction moves towards the junction with a speed of \(5 \times 10^5 \mathrm{~ms}^{-1}\). If the barrier potential of the junction is 0.45 V, then the speed with which the electron enters the p-region after penetration through the barrier is (Charge of the electron \(=1.6 \times 10^{-19} \mathrm{C}\) and mass of the electron \(=9 \times 10^{-31} \mathrm{~kg}\) )TS EAMCET 2025 Medium
- A cyclist traversed half the distance of a linear track with a velocity The remaining part of the track was covered with a velocity for half the time and a velocity for the other half of the time. If then the average velocity of the cyclist during the completion of the journey through the track isTS EAMCET 2021 Medium
More PYQs from TS EAMCET
- The force ( F in newton) acting on a particle of mass 90 g executing simple harmonic motion is given by \(\mathrm{F}+0.04 \pi^2 y=0\), where \(y\) is displacement of the particle in meter. If the amplitude of the particle is \(\frac{6}{\pi} \mathrm{~m}\), then the maximum velocity of the particle isTS EAMCET 2025 Medium
- A satellite is launched into a circular orbit of radius \(R\) around earth while a second satellite is launched into a orbit of radius \(1.02 R\). The percentage difference in the time periods of the two satellites is :TS EAMCET 2003 Easy
- Charge passing through a conductor of cross-section area \(A=0.3 \mathrm{~m}^2\) is given by \(q=3 t^2+5 t+2\) in coulomb, where \(t\) is in second. What is the value of drift velocity at \(t=2 \mathrm{~s}\) ? (Given, \(n=2 \times 10^{25} / \mathrm{m}^3\) )TS EAMCET 2010 Easy
- Two moles of a gas is expanded to double its volume by two different processes. One is isobaric and the other is isothermal. If \(W_1\) and \(W_2\) are the works done, respectively thenTS EAMCET 2016 Easy
- Assertion (A): In a elastic collision of two billiard balls, both kinetic energy and linear momentum remain conserved. Reason (R): During the collision of the balls, as the collision is elastic there is no exchange of energy. Therefore, both energy and momentum are conserved. The correct option among the following isTS EAMCET 2022 Easy
- The displacement of a particle executing SHM is given by \(y=5 \sin \left(4 t+\frac{\pi}{3}\right) .\) If \(T\) is the time period and the mass of the particle is \(2 \mathrm{~g}\), the kinetic energy of the particle when \(t=\frac{T}{4}\) is given byTS EAMCET 2009 Medium