An all metal cart is on a pair of rails 0.7 m apart. The rails are connected to

Question

An all metal cart is on a pair of rails 0.7 m apart. The rails are connected to a 36 volt battery and have a resistance of 3.5 ohms. What is the velocity of the cart when the current in the rails is 4.114286 A and the B-field of 2.1 Tesla is pointing vertically? 2.45 N 5.796 N 7.2 N 14.69 m/s 7.35 N A circular loop carrying a current of 1.5 A is oriented in a magnetic field of 5.5 T. The loop has an area of 0.272727 m^2, and is mounted on an axis, perpendicular to the magnetic field, which allows the loop to rotate. What is the torque on the loop when its plane is oriented at a 60 degree angle to the field? 7.5 N-m 1.51 N-m 11.7 N-m 1.125 N-m 0.35475 N-m If a 18 V battery, a 6 mu F capacitor and a 4 mu F capacitor were wired in parallel, what would be the charge leaving the battery' ______ mu C 33.33 mu C 540 mu C 180 mu C 9.6 mu C 240 mu C

Explanation / Answer

Solving first question

Net emf=V-BvL

current=(V-BvL)/R=4.114286

V=36 volts

B=2.1 T

L=0.7 m

R=3.5 ohm

putting all values we got

v=14.7 m/s

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