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.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 108CP: A wire ismade into a circular shape of radius R and pivoted along a central support.The two ends of...

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