Answer to Question #23036 in Mechanics | Relativity for buket

Question

1)a square aliminium rod is 1.0 m long and 5.0 mm on edge. a) what is the resistance of between its ends? b) what must be diameter of circular 1.0 m copper rod if its resistance to be the same?
2)the current in an LR circuit builds up to one-third of its steady state value in 5.0 s.what is the inductive time constant?
3) a long solenoid with a radius of 25 mm has 100 turns/cm.a single loop of radius 5 cm is placed around the solenoid,the axes of the loop and the solenoid is coinciding.the current in the solenoid is reduced from 1 to 0.5 A. at a uniform rate over a period of 10 ms. what emf appears in the loop?
4)a 1.5 uF capacitor has capacitive reactance of 10 ohm. a)What must be the frequency? b)what will be capacitive reactance be if the frequency is doubled?