Wire A and Wire B are each carrying the same current. If the diameter of Wire A is half that of Wire B, how does the drift velocity vdA in Wire A compare to that in Wire B?
a. vdA = 4 vdB
c. vdA = vdB /2
b. vdA = 2 vdB
d. vdA = vdB /4
Question 2
A solid cylinder (I = MR2/2) has a string wrapped around it many times. When I release the cylinder, holding on to the string, the cylinder falls and spins as the string unwinds. What is the downward acceleration of the cylinder as it falls?
a. 0
c. 6.5 m/s2
b. 4.9 m/s2
d. 9.8 m/s2
Major trunk lines carrying long-distance traffic crisscrossed the area east of the Mississippi. The
A typical two-wire coil-on-plug ignition system showing the triggering and the switching being ...
Spark plug wire boot pliers is a handy addition to any tool box.
When the exhaust is lean, the PCM applies a positive current into the pump cell.
The diameter of a semicircle is 4 miles. What is the semicircle's area?
A box contains red, yellow and green marbles. Half of the marbles are red, 1/8 of the remaining ...