PHYS-1206EG Lecture 2: formula sheet physics
Document Summary
Electric field (several charges): e = ke (qi/ri. Electric potential energy: u = ub ua = - q0ed. = maxsin( t); ir = imaxsin( t); vr = imaxrsin( t) Irms = 0. 707imax; pavg = i2 rmsr; vrms = 0. 707 vmax. Electric potential energy: u = qv; u12 = keq1q2/r12. Emax/bmax = e/b = c; c = /k = f. Electric field: e = / 0 = q/( 0a) Electric potential: v = ed = (qd)/( 0a) Capacitance: c = q/ v = ( 0 a)/d. Index of refraction: n = c/v = / n. Capacitors in parallel: ceq = c1 + c2 + c3 + . Capacitors in series: 1/ceq = 1/c1 + 1/c2 + 1/c3 + Mirror equation: f = r/2; m = h"/h = -q/p. Concave mirror: f +ve; convex mirror: f ve. Refraction by a single spherical surface: n1/p + n2/q = (n2 n1)/r. Resistances in series: req = ri. Resistances in parallel: 1/req = 1/ri.
