**PHY3054 - Exam 2 - Fall 1994 - Selman Hershfield
**

**Answers**
- Answer = (1) 3.2 Ohms
- Answer = (3) 7 V
- Answer = (1) 0 A
- Answer = (4) The 4 Ohm resistor dissipates the most power, and the 6 Ohm the least.
- Answer = (3) 0.67 A
- Answer = (1) Done correctly.
- Answer = (1) 5 Ohms
- Answer = (4) 0.6 A
- Answer = (4) 2.0 V
- Answer = (3) A long time after the switch is closed the current is V/R.
- Answer = (3) (i) Counter-clockwise, (ii) towards the top of the page.
- Answer = (1) The torque is a maximum with B in the x direction, and the energy is a maximum with B in the y direction.
- Answer = (5) Not enough information given.
- Answer = (4) 7x10-12 s
- Answer = (4) 10
^{-8} Tesla
- Answer = (3) Figs. 8.2 and 8.3
- Answer = (4) 180 degrees
- Answer = (3) 1.5x10
^{-3} Tesla into the page
- Answer = (1) mu I
^{2} / (4 Pi d) down
- Answer = (2) The loop feels a force away from the long wire.