Wednesday
October 22, 2014

Homework Help: physics

Posted by smiley on Tuesday, October 16, 2012 at 8:10pm.

The current-density magnitude in a certain circular wire is J = (2.75 10
10

⁄ )r
2
,
where r is the radial distance out to the wires radius of 3.00 mm. The potential applied to
the wire (end to end) is 60.0 V. How much energy is converted to thermal energy in
2.00 h?

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