Peoples Physics Book Version-3

http://www.ck12.org Concept 27. Equations and Fundamental Concepts

FB=qv×B=qvB sin(θ)

Bwire=μoI/ 2 πr

Fwire=`(I×B) =`IB sin(θ)

(direction: RHR)

(direction: RHR)

(direction: RHR)

k= 8. 992 × 109 N·m^2 /C^2

μo= 4 π× 10 −^7 T·m/A

φ=BA cos(θ)

Uel=q 4 V

Point charges:E(r) =kq/r^2 andV(r) =kq/r

(k= 1 / 4 πεowhereεo= 8. 854 × 10 −^12 C^2 /N·m^2 )

V=−4φ/ 4 t= Blv

Electric Circuits

4 V=IR

I= 4 q/ 4 t= 4 V/R

τ=RC

P= 4 E/ 4 t=I 4 V=I^2 R=V^2 /R

R=ρl/A

V=−L( 4 I/ 4 t)

Q=C 4 V

Cparallel plate=kεA/d

Cparallel=C 1 +C 2 +...

Rseries=R 1 +R 2 +...

1 /Rparallel= ( 1 /R 1 )+( 1 /R 2 )+...

1 /Cseries= ( 1 /C 1 )+( 1 /C 2 )+...