Electric Circuits in Series: GCSE revision

[@garybennett9552]

I never comment on KZbin videos but I feel I must in your case. I am entering middle age and have decided to change career. I am studying to become an electrician, maths and physics at school was mind numbing and mundane and I never understood any of it. It would have been an absolute pleasure to have someone like you to have been my teacher. You explain things in so much detail but so clearly with examples and explanations that, for me, are superb. I actually understand and can put to use what you teach and how you teach. Many many thanks for these great learning videos. Please don't ever stop. You have helped me considerably. Absolutely excellent.

[@muhammadibrahim-us7ky]

Love your videos You tech better than my teacher Just keep making these videos I watch these videos regularly and they have cleared many concepts of mine.

[@miltonmahdi]

great as always cant wait for the video for resistors in parallel !!!

[@turicaederynmab5343]

Your my saviour, I can't thank you enough.

[@krishnasaraogi5413]

same i am in love with this guy he teaches so so so so well

[@sameenmehdi2671]

you're a great teacher!

[@sairakhan6623]

5 years later but still extremely helpful!! Thank you very much

[@revolverfx]

yo good luck in your exam tomorrow

[@kamleshgarg420]

Hi sir.. U r great... I get clearly all my doubts... Can u also give a chanel for chemistry??

[@muntasirahmed8715]

best explanation!

[@aryano3]

Really helpful thanks !

[@raph9093]

brilliant video

[@UnGodlyliFe]

at 6:30 isnt the current flowing through each resistor different? If V=IR and V is always 8 and we know the resistance of the resistor is 5 ohms then shouldnt the current flowing through that resistor be 8/5? And the current flowing through the next resistor would be 8/7 and so on. Why is the current the same across all the resistors?

[@DrPhysicsA]

No. When resistors are in series the current flowing through each resistor is the same.

[@UnGodlyliFe]

+DrPhysicsA ok thanks

[@Antropovich]

You can tell, by testing with a multimeter. Set it on measuring resistance (ohm). By removing a bulb, you measure if there is resistance - if you get infinite, then that is the broken one. It can be done by checking 10 bulbs (log n in general).

[@IMadeOfClay]

Hello, I hope you can help me with a question. At 3:40 you said "2A flows through the entire circuit". How does the current know to be 2A before it reaches the resistors? Thanks for your awesome videos :)

[@DrPhysicsA]

Current Is defined as the amount of charge moved per unit time. So we are simply measuring the amount of charge which can be moved around the circuit and through the resistance.

[@alexsinclair5618]

Very useful thanks. Would you be able to clarify the following please? If these resistors were lamps/buzzers, which would light more brightly/sound louder - the 4 ohm or the 7 ohm? Man thanks

[@DrPhysicsA]

All other things being equal the lower resistance would produce a brighter light - because it would have a higher current.

[@alexsinclair5618]

+DrPhysicsA thanks for replying. can I ask another question? I thought the current running through the resistors in a series circuit is the same. is this not the case?

[@randomuser405]

When you drop all the 8V produced by the two batteries as you go through three resistors, by the end of passing through last resistor, will there be any current flowing at all? Since all of it was used up by three resistors.

[@DrPhysicsA]

don't Bother Yes. The same current travels through all resistors. It doesn't diminish. But there is a potential drop across each resistor which is a product of the current and the value of the resistor.

[@elliotmchugh]

Very clear Thank you

[@revolverfx]

watching this for my GCSE exam tomorrow. oof have to cram everything into my head

[@DrPhysicsA]

Hamyla Skilia hope it goes well. All good wishes.

[@revolverfx]

Thanks, your explanations are really good and detailed, keep it up init

[@spannungsquellestromquelle4572]

lol dat joke at the end.

[@achuachuachu3351]

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