Physics 9702 A2 Level | 421 Questions with 100% correct answers | verified
Alternating current equation - I = I0 sin ωt Define the rms value of an alternating current - equal to the steady direct curent which converts electrical energy to other forms of energy at the same rate and conditions Irms = ? - I0/√2 Transformer equation - Vs/Vp = Ns/Np = Ip/Is Power loss equation - Ploss = I2R Types of rectification - Half-wave and Full-wave Define capacitance - charge stored per unit potential difference Capacitance equation for parallel plates - C = εA/d Functions of insulator - Increases capacitance, increases distance, allows the use of high voltages Capacitance equation for sphere - C = 4πε0r Capacitors in series formula - 1/c = 1/c1 + 1/c2 + 1/c3 + ... Capacitors in parallel formula - c = c1 + c2 + c3 + ...
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