# Last set

1. Mar 1, 2004

### nautica

19) An LC circuit consist of a 1 microFarad capacitor and a 4 mH inductor. Its oscillation frequency is approximately:

21) Electrons are going around a circle in a counterclockwise direction. At the center of the circle they produce a magnetic field that is:

Out of the page.

23) the units of motional emf are

a) volt/second
b) volt meter/second
c) volt/tesla
d) tesla/second
e) tesla meter squared/second

24) two parallel wires, 4 cm apart, carry currents of 2 A and 4 A respectively, in opposite directions. the force per unit length in N/m of one wire on the other is

a) 10^-3 repulsive]
b) 10^-3 attractive
c) 4x10^-5 replusive
d) " attractive
e) none

26 Units of magnetic field might be?

a) C m/s
b) C s/m
c) C/kg
d) kg/C s
e) N/C m

Thanks again
Nautica

2. Mar 1, 2004

### himanshu121

$$f= \frac{1}{\sqrt{LC}}$$