Question
*****PLEASE GIVE STEP BY STEP SO I CAN FIGURE OUT HOW TO DO FUTURE PROBLEMS!*****
If a potential difference of 0.1 volt exists between points A and B in the figure below, what is the current through the galvanometer G when (a) the switch is open? (b) the switch is closed? What arc the SI units of the following quantities? Electric Potential Force on a charge Resistance Angular frequency Reactance Electric Field Potential energy Current Frequency Capacitance The magnetic field of a long straight wire is B = mu 0 I/2 pi middot r Where = 4 pi times 10-7 T middot m/A, B is the magnetic fields in Tesla, I is the current in amps and r is the distance from the wire in meters. You measure B versus various values of I with a Hall probe place a fixed distance r0 from the wire. You plot B on the y axis versus I on the X axis. What is the theoretical slope of the line in terms of the parameters mu 0, pi, r0 and other numbers? You measure B versus r with a Hall probe with I equal to a fixed value of I0. You plot B on the y axis versus 1/r on the X axis. What is the theoretical slope of the line in terms of the parameters mu 0 pi, I 0 and other numbers?
Explanation / Answer
a. volts
b. Newton/Coulomb or Volt /metre
c. newtons
d. joules
e. ohms
f. current = amperes
f. angular frequncy = rad/s
g. Hz
h. ohms
i= Farads
