TS EAMCET · Physics · Electromagnetic Induction
A rod of length \(80 \mathrm{~cm}\) rotates about its mid point with a frequency of \(10 \mathrm{rev} / \mathrm{s}\). The potential difference (in volts) between two ends of the rod due to a magnetic field, \(B=0.5 \mathrm{~T}\) directed perpendicular to the rod is
- A \(\pi\)
- B \(1.6 \pi\)
- C \(2 \pi\)
- D \(0.8 \pi\)
Answer & Solution
Correct Answer
(B) \(1.6 \pi\)
Step-by-step Solution
Detailed explanation
Given, frequency of revolution of the rod, \(f=10 \mathrm{rev} / \mathrm{s}\), length of rod, \(L=80 \mathrm{~cm}=0.8 \mathrm{~m}\) and magnetic field \(B=0.5 \mathrm{~T}\) Since, rod is rotated about its mid point, hence radius of circular revolution,…
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 force \(F\) is applied on a square plate of length \(L\). If the percentage error in the determination of \(L\) is \(3 \%\) and in \(F\) is \(4 \%\), then permissible error in the calculation of pressure isTS EAMCET 2017 Easy
- Two bodies of masses of \(1 \mathrm{~g}\) and \(4 \mathrm{~g}\) are moving with equal kinetic energies. The ratio of the magnitudes of their linear momenta isTS EAMCET 2023 Medium
- The potential difference between points C and D of the electrical circuit shown in the figure is
TS EAMCET 2025 Medium - At what distance from a biconvex lens of the focal length \(F\), must be placed an object for the distance between the object and its real image to be minimal?TS EAMCET 2018 Easy
- A physical quantity \(\mathrm{S}\) is related to four observables \(\mathrm{a}, \mathrm{b}, \mathrm{c}\), \(\mathrm{d}\) as \(\mathrm{S}=\frac{\sqrt{a} b}{c^3 d^4}\). If the percentage errors of measurement in a, b, c, d are \(2 \%, 1 \%, 1 \%\) and \(1 \%\) respectively, then percentage error in the quantity \(\mathrm{S}\) isTS EAMCET 2022 Easy
- A short magnetic needle is pivoted in a uniform magnetic field of induction \(1 \mathrm{~T}\). Now, simultaneously another magnetic field of induction \(\sqrt{3} \mathrm{~T}\) is applied at right angles to the first field; the needle deflects through an angle \(\theta\) whose value isTS EAMCET 2010 Medium
More PYQs from TS EAMCET
- A rocket motor consumes \(100 \mathrm{~kg}\) of fuel per second exhausting it with a speed of \(5 \mathrm{~km} / \mathrm{s}\). The speed of the rocket when its mass is reduced to \(\frac{1^{\text {th }}}{20}\) of its initial mass, is (Assume initial speed to be zero and ignored gravitational and viscous forces.)TS EAMCET 2019 Hard
- A string vibrates in its fundamental mode when a tension \(T_1\) is applied to it. If the length of the string is decreased by \(25 \%\) and the tension applied is changed to \(\mathrm{T}_2\), the fundamental frequency of the string increases by \(100 \%\), then \(\frac{\mathrm{T}_2}{\mathrm{~T}_1}=\) (Linear density of the string is constant)TS EAMCET 2025 Medium
- An element consists of a mixture of three isotopes \(A\), \(B\) and \(C\) of masses \(m_1, m_2\) and \(m_3\) respectively. If the relative abundances of the three isotopes \(A, B\) and \(C\) is in the ratio \(2: 3: 5\), the average mass of the element isTS EAMCET 2024 Medium
- A boy runs on a horizontal road with a speed of while it is raining. He sees that the rain is making an angle with the vertical while running from west to east. However, when he runs from east to west, the angle is . The rain is pouring down at an angle with the vertical and at a speed of as shown in the figure. The ratio is,TS EAMCET 2019 Medium
- Two small conducting balls of identical mass \(20 \mathrm{~g}\) and identical charge \(10^{-10} \mathrm{C}\) hang from non-conducting threads of length, \(L=300 \mathrm{~cm}\). If the equilibrium separation of balls is \(x\) and \(x \ll L\) then the magnitude of \(x\) is (Assume, \(4 \pi \in_0=\frac{1}{9 \times 10^9} \mathrm{~F} / \mathrm{m}\) and \(g=10 \mathrm{~m} / \mathrm{s}^2\) )TS EAMCET 2019 Medium
- Two particles \(A\) and \(B\) of masses ' \(m\) ' and ' \(2 m\) ' are suspended from massless springs of force constants \(K_1\) and \(K_2\). During their oscillation, if their maximum velocities are equal, then the ratio of amplitudes of \(A\) and \(B\) isTS EAMCET 2013 Easy