Reason: Lamination of core restricts eddy current. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free. Assertion: Iron loss is minimized by using a laminated core. The force is: Laws of Motion. What are the resistance of armature and induced e. m. f.? We need your help to maintenance this website. Updated on 16-Mar-2023 12:33:34. From the formula, for magnetic field inside the circle, i. e., as. 5 s, the average induced emf in the coil is 1 volt. The figure shows a circular region of radius R in which uniform magnetic field is increasing at a constant rate dB/dt =.
Hence, we got the value of electric field. The primary and secondary coils of a transformer have and turns, respectively. Both assertion and reason are true but the reason is not the correct explanation of the assertion. So please help us by uploading 1 new document or like us to download: OR LIKE TO DOWNLOAD IMMEDIATELY. Both assertion and reason are false statements. The figure shows a circular region of radius in which an electric flux is directed out of the plane of the page. The electric field produced is.
May be uniform or non-uniform. Proper planning to complete syllabus is the key to get a decent rank in JEE. The magnetic field due to a bar magnet is non-uniform. Figure shows a circular area of radius R where a uniform magnetic fiel... Opt d. Question Description. In that case, which of the following graphs, drawn schematically, correctly shows the variation of the induced electric field E(r)? 70 V. A uniform rod rotates in a uniform magnetic field B (perpendicular to its length) about its one of the end with constant angular velocity. And access revision papers with marking schemes, video lessons and live classes. C) Perpendicular to magnetic field lines.
Theory, EduRev gives you an. 94% of StudySmarter users get better up for free. A) What is the magnitude of the magnetic field at radial distance? Covers all topics & solutions for JEE 2023 Exam.
Developer's Best Practices. Thank you for interesting in our services. Reason: It is on account of self-inductance that the coil opposes any change in current passing through it. Therefore, the magnitude of an induced magnetic field at a radial distance is.
70 mWb is directed outward. The magnetic flux linked with a coil varies with time as, where is in weber and t is in seconds. Can you explain this answer?. Answer: Explanation: As given the Magnetic field is increasing at a rate of dB/dt, therefore the magnetic field is not constant. The width of the pavement is x meters as shown.
Ds denotes small elemental length/distance. During the discharging, at a point between the plates at radial distance from the central axis, the magnetic field has a magnitude of. 0 cm, a perpendicular magnetic field of magnitude 0. For a non-uniform electric field, we use equation 32-3 for finding the magnetic field inside the circle and outside the circle. Ask your doubts live everyday Join our live doubt clearing session conducted by our experts. The circuit shown here has two batteries of and and three resistors and and a capacitor.
At what depth is the bubble below the surface of the liquid? Reason: Work done in a closed path in the induced electric field is non-zero. Tests, examples and also practice JEE tests. Ans we need to find electric field inside the circular region as r < R. So, from the relation we know that, Here, - V Denotes Voltage/EMF. Along the flat top face, which has a radius of 2. Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation. Trending Categories. Questions and Answers. The JEE exam syllabus. Access over 500+ hours of video lectures 24*7, covering complete syllabus for JEE preparation. We are a non-profit group that run this website to share documents. The flux encircled by a concentric circle of radius r is given by, where and t is in seconds. When the current in a coil changes from 0 to 5 A, in 0. If the magnetic induction varies in magnitude and direction at different points in a region, the magnetic field is said to be non-uniform.
The induced current is zero at: 1. t = 0. The rifle is fired at the centre of a target away at the same level as the target. The potential across a generator is 125V when it is delivering 10A. National Mock Tests. From the given, localid="1663150045833".
A body of mass under the action of constant force has velocity at as m/s and at as m/s.