4. Two semi-infinite parallel metal rails have one sides connected through a battery of constant emf ɛ and a and resistor of resistance R (Fig. 2). R A straight rod PQ of mass m and length I, is x B x F placed on and perpendicular to the rails. The setup is placed in a uniform magnetic field B pointing into the page. At time t=0, the rod begins to move from rest smoothly over the rails S to the right. Fig. 2 (a) Express the emf induced in the circuit when the rod is moving at a speed v. (b) Hence find the current I in the rod in terms of ɛ , l, B, v and R.

4. Two semi-infinite parallel metal rails have one sides connected through a battery of constant emf ɛ and a and resistor of resistance R (Fig. 2). R A straight rod PQ of mass m and length I, is x B x F placed on and perpendicular to the rails. The setup is placed in a uniform magnetic field B pointing into the page. At time t=0, the rod begins to move from rest smoothly over the rails S to the right. Fig. 2 (a) Express the emf induced in the circuit when the rod is moving at a speed v. (b) Hence find the current I in the rod in terms of ɛ , l, B, v and R.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

4. Two semi-infinite parallel metal rails have one
sides connected through a battery of constant
emf ɛ and a and resistor of resistance R (Fig. 2).
R
I
A straight rod PQ of mass m and length I, is
x B ×
F
placed on and perpendicular to the rails. The
setup is placed in a uniform magnetic field B
pointing into the page. At time t =0, the rod
Ох
begins to move from rest smoothly over the rails
S
to the right
Fig. 2
(a) Express the emf induced in the circuit when
the rod is moving at a speed v.
(b) Hence find the current I in the rod in terms of ɛ , l, B, v and R.

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