Equations

Question 1

Calculating Intensity:

Answer 1

Intensity= 1/distance^2

Question 2

Coulomb’s Law: State K as well

Answer 2

F=K(q1q2)/d^2
k=9x10^9

Question 3

Calculate Effective RMS

Answer 3

Effective RMS=Peak/1.414

Question 4

What are the 3 units used in ohms law and what is the equation?

Answer 4

V, I, and R
V
——–
i I R

Question 5

List all the equations for a series circuit:

Answer 5

RT=R1+R2+R3
IT=I1=I2=I3
VT=V1+V2+V3

Question 6

List all the equations for a parallel circuit

Answer 6

IT=I1+I2
VT=V1=V2
RT=1/r1+1/r2

Question 7

What is the equation for power when there is no resistance?

Answer 7

P
———–
i I V

Question 8

What are the equations for power when there is resistance?

Answer 8

P=I^2 (R)
P=V^2/R

Question 9

What is the equation for the ratio of induced Voltages?

Answer 9

Vp/np=Vs/ns
n=number of turns
s=secondary wire
p=primary wire

Question 10

What is the equation for generator rating?

Answer 10

kW=mA/10
or
kW=kVp x mA/1000

Question 11

How do you find heat unit capacity?

Answer 11

HU=mAs x kVp

Question 12

How do you find Heat Units/Second

Answer 12

mA x kVp

Question 13

Calculate Magnification factor and SOD

Answer 13

MF=SID/SOD
SOD=SID-OID