Assertion: When a piece of non-metal and a metal are dropped from the same height near the surface of the earth, the non-metallic piece will reach the ground first. E Denotes electric field. How much is the current in the circuit in steady state? The primary and secondary coils of a transformer have and turns, respectively. Which shows a radius of a circle. The flux encircled by a concentric circle of radius r is given by, where and t is in seconds. Theory, EduRev gives you an. In that case, which of the following graphs, drawn schematically, correctly shows the variation of the induced electric field E(r)?
The induced current is zero at: 1. t = 0. Defined & explained in the simplest way possible. Figure shows a circular region of radius R in whichuniform magnetic field B exists. The magnetic fielddBis - Brainly.in. The figure below shows a circular fishpond of radius 6 meters surrounded by a pavement of uniform width. Questions and Answers. Answer: Explanation: As given the Magnetic field is increasing at a rate of dB/dt, therefore the magnetic field is not constant. Assertion: Self-inductance is called the inertia of electricity. In terms of resistance and time, the dimensions of ratio of the permeability and permittivity is: Physical World, Units and Measurements. Assertion is a true statement but the reason is false.
C) Perpendicular to magnetic field lines. Current Electricity. Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation. We need your help to maintenance this website. When the current in a coil changes from 0 to 5 A, in 0. And access revision papers with marking schemes, video lessons and live classes. 70 V. The figure shows a circular region of radius 20. A uniform rod rotates in a uniform magnetic field B (perpendicular to its length) about its one of the end with constant angular velocity. When it delivers 30A the potential is 120V.
Figure shows a circular area of radius R where a uniform magnetic fiel... Opt d. Question Description. The figure shows a circular region of radius in which an electric flux is directed out of the plane of the page. Effective Resume Writing. Thank you for interesting in our services. Figure 32-27 shows a closed surface. 32-7) are being discharged by a constant current.
To keep our site running, we need your help to cover our server cost (about $400/m), a small donation will help us a lot. An air bubble of radius is in a liquid having surface tension and density. National Mock Tests.
Localid="1663150013317". As i. e., then the is taken as unity, so the equation is. Mechanical Properties of Fluids. Get premium membership. From the given, localid="1663150045833". Two plates (as in Fig. For JEE 2023 is part of JEE preparation.
5 s, the average induced emf in the coil is 1 volt. We are a sharing community. A) What is the magnitude of the magnetic field at radial distance? Both assertion and reason are false statements.
Figure 32-30 shows a circular region of radius in which a displacement current is directed out of the page. How far above the centre of the target the rifle must be aimed in order to hit the target? A) Perpendicular to magnetic field lines, in a direction defined by the right-hand rule. At what depth is the bubble below the surface of the liquid? Developer's Best Practices. The space between the plates of a parallel plate capacitor is filled with a 'dielectric' whose 'dielectric constant' varies with distance as per the relation: The capacitance, of this capacitor, would be related to its 'vacuum' capacitance as per the relation: Electrostatic Potential and Capacitance. Live Doubt Clearing Session. The force is: Laws of Motion. D) Parallel to magnetic field lines, with the south pole pointing in the direction of the field. From the formula, for magnetic field inside the circle, i. The figure shows a circular region of radius 8. e., as. Each plate has a radius of. In English & in Hindi are available as part of our courses for JEE.
The formula is as follows: Where, is the magnetic field, is the flux. The rifle is fired at the centre of a target away at the same level as the target. Can you explain this answer?. The electric field produced is. Reason: Lamination of core restricts eddy current. If the magnetic flux linked with the primary coil is given by where is in weber, is time in second and is a constant, then the output voltage across the secondary coil is: Questions from JEE Main 2014. What are the resistance of armature and induced e. m. f.? Proper planning to complete syllabus is the key to get a decent rank in JEE. Hence, we got the value of electric field. 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. Besides giving the explanation of. Test Series/Daily assignments.
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. Assertion: The induced electric field is non-conservative. Reason: Work done in a closed path in the induced electric field is non-zero. Physics Tutorial on Magnetic Fields.
Ds denotes small elemental length/distance. B) What is the current in the wires attached to the plates? Solution: Questions from Electromagnetic Induction. HR Interview Questions. Two soap bubbles coalesce to form a single bubble. Ample number of questions to practice Figure shows a circular area of radius R where a uniform magnetic fieldis going into the plane of paper and increasing in magnitude at a constant rate. If is the subsequent change in volume of contained air and the change in total surface area, is the surface tension and atmospheric pressure, which of the following relation is correct? The magnitude of the displacement current is given by, where is the radial distance. If the velocity of conductor becomes double, the induced current will be. Non-uniform along its length.
Covers all topics & solutions for JEE 2023 Exam. Updated on 16-Mar-2023 12:33:34. The initial speed of a bullet fired from a rifle is. If the magnetic induction varies in magnitude and direction at different points in a region, the magnetic field is said to be non-uniform. Tests, examples and also practice JEE tests. Therefore, the magnitude of an induced magnetic field at a radial distance is. The pressure inside the bubble is 1100 greater than the atmospheric pressure. 94% of StudySmarter users get better up for free.
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