Thevenin's Theorem (Circuits for Beginners #28)

[@tiger-tg5gh]

Very nice and ; good refreshment course

[@uksuperrascal]

Hi - At @02:20 in your drawing you have connected your DVM to the wrong polarity's?. With no load connected V out and V would be 20V with respect to 20R + 16R to 20V NEG making the Circuit. How ever the internal 20V load current is V/R = A = 20 / 100 = 0.2A

[@uksuperrascal]

@5:16 You would know which is which because 1 is 20V o/p and the other is 16V o/p ?.

[@DaytimeOperator]

I know it's been 10 months, but please help me understand. at 4:44 , you put the 20 ohms and 80 ohm resistors as parallel. I assume you used the parallel resistor formula, Rt = 1/R1+1/R2+1/Rn ? wouldn't the total resistance for those two in parallel be: 1/20 + 1/80 = Rt = 1/16 or 0.0625? But instead, you said it was 16 ohms. What mistake am I making here?

[@arulgk9673]

The Parallel Resistor formula is 1/Rt = 1/R1 + 1/R2 + 1/Rn, so u gotta inverse the 1/16 which gives 16 ohms total resistance in the circuit. Parallel Resistor formula can be simplified to Rt = (R1 x R2)/(R1+R2) if there is only R1 and R2. This is why he did the calculation very quickly. Hope this helps!

[@DaytimeOperator]

@@arulgk9673 thanks!