Term

Definition


Term

Definition
change U = q * change in V 


Term
Electric Potential due to several Point Charges 

Definition
U_E=1/(4π∈_o ) ((q_1 q_2)/r_1,2 +(q_1 q_3)/r_1,3 +(q_3 q_2)/r_3,2 ) 


Term
Change in Voltage across a uniform field 

Definition


Term

Definition
Q= C V C is capacitance for the capacitor and Q is the charge on each plate 


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Definition


Term

Definition
Junction ∑▒〖Current in∑▒〖Current Out 〗=0〗
Loop ∑▒〖ΔV=0〗 


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Definition


Term

Definition
V_c (t)= E(1e^(t/τ) ) τ is the time constant RC 


Term
Discharging an RC circuit 

Definition


Term

Definition
(F_B ) ⃗=qv ⃗×B ⃗ Lorentz force (magnetic force on a point charge) 


Term
Circular Force of Magentic Field 

Definition
F=(mv^2)/r=qvB For circular trajectory around B lines 


Term
Magnetic Force on a Straight Wire segment 

Definition
F ⃑=IL ⃗×B ⃗ Magnetic Force on a straight line segment of current carrying wire 


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Definition


Term

Definition
ϕ=BA cosΘ theta is the angle between B and the normal to the surface 


Term

Definition
E=  N*Δϕ/Δt N = loops phi = change in flux t = time interval E= EMF 


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Definition


Term

Definition
A current in coil 1 causes a magnetic flux in current 2 N_1 ϕ_12=MI_2 


Term

Definition
I(t)=I_f (1e^(t/τ) )
τ is time constant I_f is the final current 


Term
Time Constants for RC and LR circuits 

Definition


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Definition


Term

Definition


Term

Definition
You get average power as it current is calculated from the rms Voltage. therefore its the rms I you use. 


Term

Definition
V_c =I*Xc = I/(2 π f * C) 


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Definition


Term
Phasor Diagrams and the RLC Circuit 

Definition
the amplitude = (V_R^2+(V_LV_C)^2)1/2
in AC E = IZ Z is impedance
Z = (R^2+(X_LX_C)^2)1/2 


Term

Definition
n=C/v
C speed of light v speed in other medium n is always bigger than 1 


Term

Definition
I = < P >/A
average power A is area 


Term

Definition
I = I_o cos ^2 Θ
theta is angle between axis of transmission and the incident of polarizations 


Term
Angles and Laws of Reflection 

Definition
Angle of incidence is equal to angle of Reflection 


Term

Definition
n_i sin Θ_i = n_t sin Θ_t 


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Definition
linear > change in length/original length = alpha * change in temp
area> change in area/original are = 2* alpha * change in temp 


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Definition


Term

Definition
Work done on the system is equal to negative work done by the gas 


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Definition
change in entropy = change in heat/ temp 


Term

Definition
change in internal energy = mols * C * change in temp
C is D.O.F. C = 3/2 R for monoatomic gasses C = 5/2 for diatomic gasses 

