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formular sheet - AEPH 114/115(Introductory Physics 2...

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AEPH 114/115 (Introductory) Physics 2 Formula Sheet KNUTT 114 Electromagnetism : F e 12 = k e q 1 q 2 r 2 F e = q o E E ( r ) = k e q r 2 U = k e q 1 q 2 r V = k e q r U = q o V C = Q V C || = ϵ o A d U c = 1 2 CV 2 V = IR P = IV I = nqv d A E = ρ I A R = ρL A C eq = n i =1 C i 1 C eq = n i =1 1 C i R eq = n i =1 R i 1 R eq = n i =1 1 R i τ c = RC q ( t ) = C E (1 e t/τ c ) I ( t ) = E R e t/τ c q ( t ) = Qe t/τ c I ( t ) = Q RC e t/τ c F b = q v × B F b = Iℓ × B τ = µ × B µ = NIA B sol = µ o N I B wire = µ o I 2 πr B arc = µ o I 4 πR θ B axis loop = µ o IR 2 2( x 2 + R 2 ) 3 / 2 B centre loop = µ o I 2 R F = µ o I 1 I 2 2 πd Φ B = NBAcosθ E ind = d Φ B dt E L = L dI dt L = Φ B I U L = 1 2 LI 2 τ L = L R I ( t ) = E R (1 e t/τ L ) I ( t ) = E R e t/τ L L sol = µ o N 2 A = µ o n 2 Aℓ V 1 N 1 = V 2 N 2 ω = 2 πf E = E o cos ( ωt ) I rms = I R 2 V rms = V R 2 V rms = I rms R P rms = I rms V rms 115 Electromagnetism : F e12 = k e q 1 q 2 r 2 ˆ r 21 F e = q o E E ( r ) = k e q r 2 ˆ r U = k e q 1 q 2 r 12 V ( r ) = k e q r E ( r ) = k e dq r 2 ˆ r
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