Electromagnetic Induction: Induced EMF and current.

Two parallel loops of wire having the same common axis. the smaller loop of (raduis r ) and is above the larger loop (raduis R) by a distance X>>R. the magnetic field due to the counterclockwise current i in the larger loop is nearly uniform throughout the smaller loop. suppose that x is increasing at a constant rate dx/dt = v. (a) find the expression for the magnetic flux through the area of the smaller loop as a function of x. In the smaller loop, find the expression for the induced emf and the direction of the induced current.

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Electromagnetic Induction. ... Volts As per Lenz's law the polarity of the induced emf is such ... the magnetic field of the electromagnet which is inducing the emf. ...

... The rate of change of current is. From Faraday's law (of electromagnetic induction). Induced emf The magnitude of the emf is then --- (5) [using = LI]. ...

... As per Faraday's law of electromagnetic induction, induced emf e = - dφdt = BlvN. Magnitude of the current induced in the coil = I = e/R = BlvN/R. ...

... In other words the polarity of induced emf is such ... R_2 I where I is the current flowing through ... L = LdI/dt (Faraday's law of electromagnetic induction) R_2 I ...

... magnitude of the field change to induce a current...EMF that must be induced in the solenoid = RI ... As per Faraday's law of electromagnetic induction, magnitude of ...

... By Faradays law of electro-magnetic induction, magnitude of emf induced per turn in the smaller coil due to variation in the current flowing through the bigger ...

... in compliance with Faraday-Lenz's law of electromagnetic induction. ... At a given instant emf induced in the crossbar ... the source which is causing the current. ...

... As per Faraday's law of electromagnetic induction, the magnitude of ... The RMS value of the induced emf in the ring ... The current flows through the ring around its ...

... per Faraday's law of electromagnetic induction, EMF induced in the ... is such that it induces magnetic field ... dt (direction of induced current is counterclockwise). ...

... Two wires carry currents of 5.00 A in opposite ... having n turns, carrying a current I is ... 9. By Faraday's law of electromagnetic induction, induced emf = - dφ/dt. ...