In an electrochemistry experiment the voltage between two electrodes is 10 Volts andthe current is 10 mA. Find the heat released after one minute.
For this I have calculated resistance R=V/I = 10/0.01 = 1000 ohms
and then used tV^2/R = 60*0.01^2 / 1000 = 0.000006
is this correct?![]()
-
jacksonmeg
- Follow
- 2 followers
- 4 badges
- Send a private message to jacksonmeg
- Thread Starter
Offline4ReputationRep:- Follow
- 1
- 11-05-2015 22:19
-
uberteknik
- Follow
- 116 followers
- 21 badges
- Send a private message to uberteknik
- Study Helper
Offline21ReputationRep:Study Helper- Follow
- 2
- 14-05-2015 19:23
(Original post by jacksonmeg)
In an electrochemistry experiment the voltage between two electrodes is 10 Volts andthe current is 10 mA. Find the heat released after one minute.
For this I have calculated resistance R=V/I = 10/0.01 = 1000 ohms
and then used tV^2/R = 60*0.01^2 / 1000 = 0.000006
is this correct? -
jacksonmeg
- Follow
- 2 followers
- 4 badges
- Send a private message to jacksonmeg
- Thread Starter
Offline4ReputationRep:- Follow
- 3
- 14-05-2015 22:53
-
uberteknik
- Follow
- 116 followers
- 21 badges
- Send a private message to uberteknik
- Study Helper
Offline21ReputationRep:Study Helper- Follow
- 4
- 15-05-2015 10:09
(Original post by jacksonmeg)
Umm.. this is the full question. In fact I copied and pasted it
I'm assuming it's energy released in this example:
Alternately:
-
jacksonmeg
- Follow
- 2 followers
- 4 badges
- Send a private message to jacksonmeg
- Thread Starter
Offline4ReputationRep:- Follow
- 5
- 15-05-2015 14:59
(Original post by uberteknik)
It's the word 'heat' which is ambiguous as it says nothing about the units the answer should be stated in. i.e. heat could be temperature difference or power or energy expended etc.
I'm assuming it's energy released in this example:
Alternately:
-
University of Leeds
-
Physics with a Foundation Year
University of East Anglia (UEA)
-
University of Oxford
-
University of Liverpool
-
University of Warwick
-
Durham University
-
Physics (with integrated year in industry)
Aberystwyth University
-
University of Liverpool
-
Chemical Physics with work placement
University of Glasgow
-
University of Oxford
We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.
- charco
- Mr M
- Changing Skies
- F1's Finest
- rayquaza17
- Notnek
- RDKGames
- davros
- Gingerbread101
- Kvothe the Arcane
- TeeEff
- The Empire Odyssey
- Protostar
- TheConfusedMedic
- nisha.sri
- claireestelle
- Doonesbury
- furryface12
- Amefish
- harryleavey
- Lemur14
- brainzistheword
- Rexar
- Sonechka
- TheAnxiousSloth
- EstelOfTheEyrie
- CoffeeAndPolitics
- an_atheist
- Labrador99
- EmilySarah00