tag:blogger.com,1999:blog-2214461049219354662.post3558103711126378223..comments2024-03-28T13:08:35.581+04:00Comments on Physics Reference: Physics 9702 Doubts | Help Page 66Unknownnoreply@blogger.comBlogger11125tag:blogger.com,1999:blog-2214461049219354662.post-68487566216585920202016-06-09T00:34:56.831+04:002016-06-09T00:34:56.831+04:00thank u! Your website is very useful!!thank u! Your website is very useful!!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-18314957603444578022015-06-03T18:47:24.922+04:002015-06-03T18:47:24.922+04:00Of course, that's what I said aboveOf course, that's what I said aboveAdminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-16795096224577572802015-06-03T01:08:52.430+04:002015-06-03T01:08:52.430+04:00In the above question,
If we use p=VI after calc...In the above question, <br /><br />If we use p=VI after calculating the current using: current I in circuit = V / R = 12 / 4.0 = 3.0 A <br />P=VI <br />12*3=36 <br />This gives us an incorrect answer. Is this because the v is supposed to be the potential difference across the resistor and not the EMF? Just 'Me'https://www.blogger.com/profile/09742741295678489085noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-33898284760235117182015-06-01T17:04:12.079+04:002015-06-01T17:04:12.079+04:00Basically, both are the same, but we need to apply...Basically, both are the same, but we need to apply the formula correctly.<br /><br />Consider P = VI<br />FOr a cell, V is the emf of the cell and I is the total current coming from the cell.<br />For a resistor, V is the pd across the resistor and I is the current flowing through it.<br /><br />Consider P = I^2R. it is just V = IR replaced in the equation.<br />FOr a cell, we do not use this equation since it may not have a resistance. We use the above formula.<br />For a resistor, I is the current through it and R is its resistance.Adminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-48363725833717752542015-06-01T02:06:33.438+04:002015-06-01T02:06:33.438+04:00How do we know when to use P=VI or P=I^2R?How do we know when to use P=VI or P=I^2R?Just 'Me'https://www.blogger.com/profile/09742741295678489085noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-36452264370013844852015-02-25T14:28:04.748+04:002015-02-25T14:28:04.748+04:00The second one is explained at
http://physics-ref....The second one is explained at<br />http://physics-ref.blogspot.com/2015/02/physics-9702-doubts-help-page-71.htmlAdminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-85712281083209471352015-02-18T11:22:21.745+04:002015-02-18T11:22:21.745+04:00It's explained at
http://physics-ref.blogspot....It's explained at<br />http://physics-ref.blogspot.com/2015/02/physics-9702-doubts-help-page-68.htmlAdminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-69204173466613169422015-02-16T11:03:40.229+04:002015-02-16T11:03:40.229+04:00Details have been added at
http://physics-ref.blog...Details have been added at<br />http://physics-ref.blogspot.com/2014/09/9702-june-2011-paper-12-worked.htmlAdminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-33407151015818605782015-02-15T23:54:55.260+04:002015-02-15T23:54:55.260+04:0012/M/J/11 Q.3412/M/J/11 Q.34Anonymoushttps://www.blogger.com/profile/11459103661460827376noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-43238845750993323602015-02-15T04:22:52.098+04:002015-02-15T04:22:52.098+04:0021/M/J/11 Q.721/M/J/11 Q.7Anonymoushttps://www.blogger.com/profile/11459103661460827376noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-58315160577354758942015-02-12T23:29:44.472+04:002015-02-12T23:29:44.472+04:0022/O/N/10 Q.2(b)
23/O/N/10 Q.7(b)(ii)22/O/N/10 Q.2(b)<br />23/O/N/10 Q.7(b)(ii)Anonymoushttps://www.blogger.com/profile/11459103661460827376noreply@blogger.com