Equations Flashcards

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1
Q

Calculating Intensity:

A

Intensity= 1/distance^2

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2
Q

Coulomb’s Law: State K as well

A

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

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3
Q

Calculate Effective RMS

A

Effective RMS=Peak/1.414

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4
Q

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

A

V, I, and R
V
——–
i I R

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5
Q

List all the equations for a series circuit:

A

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

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6
Q

List all the equations for a parallel circuit

A

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

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7
Q

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

A

P
———–
i I V

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8
Q

What are the equations for power when there is resistance?

A

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

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9
Q

What is the equation for the ratio of induced Voltages?

A

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

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10
Q

What is the equation for generator rating?

A

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

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11
Q

How do you find heat unit capacity?

A

HU=mAs x kVp

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12
Q

How do you find Heat Units/Second

A

mA x kVp

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13
Q

Calculate Magnification factor and SOD

A

MF=SID/SOD
SOD=SID-OID

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