AP EAMCET · PHYSICS · Electromagnetic Induction
A coil having 500 square loops each of side 10 \(\mathrm{cm}\) is placed normal to a magnetic flux which increases at a rate of \(1 \mathrm{Ts}^{-1}\). The induced emf is
- A \(0.1 \mathrm{~V}\)
- B \(0.5 \mathrm{~V}\)
- C \(1 \mathrm{~V}\)
- D \(5 \mathrm{~V}\)
Answer & Solution
Correct Answer
(D) \(5 \mathrm{~V}\)
Step-by-step Solution
Detailed explanation
Given that, number of loops, \(N=500\) Side of square, \(a=10 \mathrm{~cm}=0.1 \mathrm{~m}\) Rate of increase of magnetic field, \(\frac{d B}{d t}=1 \mathrm{~T} / \mathrm{s}\) Now, induced emf, \(\varepsilon=-N \frac{d \phi}{d t}=-N \frac{d}{d t}(B A)\)…
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
- If two soap bubbles of different radii are connected by a tube, thenAP EAMCET 2011 Easy
- An object of mass \(3 \mathrm{~kg}\) is tied by a string of negligible mass to a ceiling and held such that the string is taut. The object is released suddenly such that the string remains taut. It's acceleration when released is (acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) )
AP EAMCET 2022 Hard - In a transistor circuit, when the base current is increased by 50 micro-amperes keeping the collector voltage fixed at 2 volts, the collector current increases by \(1 \mathrm{~mA}\). The current gain of the transistor isAP EAMCET 2002 Easy
- A particle starts executing simple harmonic motion from one extreme position. If \(\mathrm{a}, \mathrm{b}\) and \(c\) are the displacements of the particle from the mean position at the ends of three successive seconds, the frequency of simple harmonic motion isAP EAMCET 2018 Easy
- A rectangular metal plate \(8 \mathrm{~cm} \times 4 \mathrm{~cm}\) at \(127^{\circ} \mathrm{C}\) emits \(E \mathrm{Js}^{-1}\). If both length and breadth are halved and the temperature is raised to \(327^{\circ} \mathrm{C}\), the rate of emission isAP EAMCET 2020 Medium
- A heating element is designed to dissipate \(2400 \mathrm{~W}\) when connected to \(240 \mathrm{~V}\). The power it dissipates when it is connected to \(120 \mathrm{~V}\) is (Assume that resistance of the filament is constant)AP EAMCET 2022 Easy
More PYQs from AP EAMCET
- Find the equation of the plane passing through the point and perpendicular to the planes andAP EAMCET 2021 Easy
- The time period of a simple pendulum on the surface of the earth is T. The height above the surface of the earth at which the time period of the pendulum becomes \(2 \mathrm{~T}\) is (Radius of the earth \(=6400 \mathrm{~km}\) )AP EAMCET 2023 Medium
- The magnetic field at the centre of a long solenoid having 400 turns per unit length and carrying a current ' \(i\) ' is \(6.24 \times 10^{-2} \mathrm{~T}\). The magnetic field at the centre of another long solenoid having 200 turns per unit length and carrying a current \(\frac{' i^{\prime}}{2}\) isAP EAMCET 2025 Medium
- The equations \(x^2-a x+b=0\) and \(x^2+b x-a=0\) have a common root, thenAP EAMCET 2021 Easy
- A \(500 \mathrm{~g}\) ball is attached to one end of an aluminum wire of area of cross-section \(0.5 \mathrm{~mm}^2\) and an unstretched length of \(1.4 \mathrm{~m}\). The other end of the wire is fixed to the top of a vertical pole. The ball rotates about the pole in a horizontal plane such that the angle between the wire and the horizontal is \(30^{\circ}\). The increase in the length of the wire is ____ \(\mathrm{mm}\). (Young's modulus of aluminum \(=0.7 \times 10^{11} \mathrm{Nm}^{-2}\) and acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\))AP EAMCET 2017 Medium
- A nucleus has mass number \(A_1\) and volume \(V_1\). Another nucleus has mass number \(A_2\) and volume \(V_2\). If the relation the mass numbers is \(\mathrm{A}_2=3 \mathrm{~A}_1\), then \(\frac{\mathrm{V}_1}{\mathrm{~V}_2}=\)AP EAMCET 2022 Medium