One of the oldest myths in human genetics is that having blue eyes is determined by a single gene, with the allele for blue eyes recessive to the allele for non-blue eyes (green, brown, or hazel). Many people who know nothing else about genetics think that two blue-eyed parents cannot have a brown-eyed child.ne of the oldest myths in human genetics is that having blue eyes is determined by a single gene, with the allele for blue eyes recessive to the allele for non-blue eyes (green, brown, or hazel). Many people who know nothing else about genetics think that two blue-eyed parents cannot have a brown-eyed child.
Ohm's Law can be used to verify voltage drop. In a DC circuit, voltage equals current multiplied by resistance. V = I R {\displaystyle V=IR} . Also, Kirchhoff's circuit laws state that in any DC circuit, the sum of the voltage drops across each component of the circuit is equal to the supply voltage.
The voltage on a discharging capacitor, with time constant T, and initial voltage Vo, varies with time exponentially as; V(t) = Voe^-t/T. So the voltage after one time constant is; V(T) = Vo/e (about 46% of Vo) The Charging eq is; V(t) = Vo[1 - e^-t/T] The voltage after one time constant is; V(T) = Vo[1-1/e] (about 54% of Vo) Since e=2.718 it is common practice to approximate this as ~ 3. Then the discharge voltage afer one time constant is approximately (1/3)Vo And the charging voltage after one time constant is approximately (2/3)Vo