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Science Clinic => Physics => Topic started by: tth on Oct 11, 2019

Title: A conducting rod whose length is = 27.0 cm is placed on frictionless U-shaped metal rails that is ...
Post by: tth on Oct 11, 2019

A conducting rod whose length is ℓ = 27.0 cm is placed on frictionless U-shaped metal rails that is connected to a lightbulb having a resistance of 5.00 Ω as shown in the figure. The rails and the rod are in the plane of the page. A constant uniform magnetic field of strength 1.20 T is applied perpendicular to and out of the paper. An external applied force moves the rod to the right with a constant speed. At what speed should the rod be pulled so that the lightbulb will consume energy at a rate of 1.10 W?

◦ 6.00 m/s
◦ 3.50 m/s
◦ 2.00 m/s
◦ 7.24 m/s
◦ 4.26 m/s

Title: A conducting rod whose length is = 27.0 cm is placed on frictionless U-shaped metal rails that is ...
Post by: thall411 on Oct 11, 2019

7.24 m/s

Title: A conducting rod whose length is = 27.0 cm is placed on frictionless U-shaped metal rails that is ...
Post by: tth on Oct 11, 2019

Thanks

Title: A conducting rod whose length is = 27.0 cm is placed on frictionless U-shaped metal rails that is ...
Post by: thall411 on Oct 11, 2019

Welcome :)

Title: Re: A conducting rod whose length is = 27.0 cm is placed on frictionless U-shaped metal rails that
Post by: nikoplaystrombone on Dec 16, 2020

thank you