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A2 Physics | Post your doubts here
it's ok...so u still confursed? :unsure: what's exactly confusing you..u don't look at the graph for ac... look at the circuit..and try to point ur finger and see...how the current flows... -
A2 Physics | Post your doubts here
i think you're still confused... :unsure: don't look at the graph ....look at the circuit and see what happens...although input is changing...polarity at the output is not..right? waeyyakum..aameen! May Allah make the exam easy for you too and give you the good what u desire... -
A2 Physics | Post your doubts here
they do... now the ones in grey reversed biased...right...? see the red lin ...it goes through that top diode.. in this case...it goes opposite..instead of the top one it's the diode on the right that takes he current through... but in both cases the output on the above one is positive ;) -
A2 Physics | Post your doubts here
ok...so 1 dm = 10 cm cube both sides 1^3 dm^3 = 10^3 cm^3 so u have 1 dm^3 = 1000 cm^3 -
A2 Physics | Post your doubts here
Firstly you ain't causing any trouble to me :D You know the function of the diode...right? it conducts only when forward biased..! not when reverse biased.. Now see..on the left hand side..the input changes...cuz it's alternating..so positive-negative-positive-negative... but sincethe... -
A2 Physics | Post your doubts here
assalamoalaikum wr wb! :) divide it by 1000 it's ok :p -
A2 Physics | Post your doubts here
umm...i didnt get what u meant :unsure: cud u plz elaborate.. -
A2 Physics | Post your doubts here
yup...that's wrong as far as I know...! I didn't notice that :D This is the correct one: -
A2 Physics | Post your doubts here
It'd be one wave form actually what we get...but if we analyze it...we get to know it's combination of two half waves...but overall..a full wave rectifier is what we get..! -
A2 Physics | Post your doubts here
Can you see the graph drawn towards the right...? the first produced as the red ones are forward biased...then they become reverse biased and blue ones are forward biased..so the next one produced as in the graph... Ermm..if still confused, do let me know.. -
A2 Physics | Post your doubts here
The blue ones will have the same graph...so do the red ones...that's why i labelled the graphs: first 'set' of diode [let this be the blue one] , and second 'set' of diodes [let this be the red ones] ;) -
A2 Physics | Post your doubts here
I assume you didnt read my post above...:unsure: :D -
A2 Physics | Post your doubts here
It'll be only two graphs... remember..two of them work together, while the other two dont work..? Check this if you're confused...[feel free to ask if you still have trouble] Use the +/- buttons to change the direction of the ac input http://www.flashscience.com/electricity/smoothing.htm -
A2 Physics | Post your doubts here
You can say that I guess. This is what's in the chris Mee book: The r.m.s value of the current or voltage is that value of the direct current or voltage that would produce heat at the same rate in a resistor. Can you please tell me, which mark scheme penalised for saying dc? -
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A2 Physics | Post your doubts here
Definition for r.m.s value of ac : the value of steady / constant voltage that produces same power (in a resistor) as the alternating voltage...(this answer is from mark scheme as far as I remember) -
A2 Physics | Post your doubts here
in that case u know, a varying output will be produced... like the last one - the orange part... so peak value is given ;) -
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A2 Physics | Post your doubts here
Assalamoalaikum wr wb! did u mean ac? max value and rms is for ac...