Question: (a) What is the equilibrium current through the bulb? (b) What is the equilibrium speed of the bar? A metal bar of mass M =

(a) What is the equilibrium current through the bulb?
(b) What is the equilibrium speed of the bar?

A metal bar of mass M = 0.2 kg and length L = 20 cm slides with negligible friction but with good electrical contact down between two vertical metal posts (see figure below). The falling bar and the vertical metal posts have negligible electrical resistance, but the bottom rod is a resistor with resistance R = 240 2. Throughout the entire region there is a uniform magnetic field of magnitude B=5 T coming straight out of the page.

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