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September 26, 2025, 02:08:09 pm
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Author Topic: Power q11 - Voltage graph for the loop  (Read 3346 times)  Share 

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thatisanote

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Power q11 - Voltage graph for the loop
« on: November 15, 2011, 04:07:24 pm »
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What did you guys do?

Itute says linear sloped graphs.

I did rectangles

Others on this board did cubics

My teachers said sine graphs


What is it?
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Lasercookie

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Re: Power q11 - Voltage graph for the loop
« Reply #1 on: November 15, 2011, 04:28:13 pm »
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I did rectangles.

I started off with the flux graph, which was kind of a trapezium shape.

The EMF graph of that would be two rectangles, I believe.
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blurf

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Re: Power q11 - Voltage graph for the loop
« Reply #2 on: November 15, 2011, 04:29:26 pm »
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Mine looked a little like a sine graph, but not as steep on the far left and the far right. So ease in towards the first maximum, sharply drop down to the second (negative) maximum, ease back to zero. All smooth curve.
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Lucas111

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Re: Power q11 - Voltage graph for the loop
« Reply #3 on: November 15, 2011, 06:30:02 pm »
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OMG I did Rectangles too!!! FML D:
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king surat

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Re: Power q11 - Voltage graph for the loop
« Reply #4 on: November 15, 2011, 06:31:06 pm »
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Quote from: blurf on November 15, 2011, 04:29:26 pm
Mine looked a little like a sine graph, but not as steep on the far left and the far right. So ease in towards the first maximum, sharply drop down to the second (negative) maximum, ease back to zero. All smooth curve.

yeah that's what i had as well
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thushan

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Re: Power q11 - Voltage graph for the loop
« Reply #5 on: November 15, 2011, 06:40:37 pm »
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me too
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taqi

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Re: Power q11 - Voltage graph for the loop
« Reply #6 on: November 15, 2011, 06:49:01 pm »
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Thats the nail in the coffin
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illuminati

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Re: Power q11 - Voltage graph for the loop
« Reply #7 on: November 15, 2011, 06:52:44 pm »
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LOL I did rectangles as well
but i've only done 2 practice exams (7th subject) and no study, so yeah, don't value my opinion
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blurf

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Re: Power q11 - Voltage graph for the loop
« Reply #8 on: November 15, 2011, 07:09:13 pm »
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That was definitely the hardest question on the exam. I spent the last 15 minutes thinking about it.
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HarveyD

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Re: Power q11 - Voltage graph for the loop
« Reply #9 on: November 15, 2011, 07:15:56 pm »
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what did you guys put for the one where the guy turns the coil with his hand after DC current is removed
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Danielhogz

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Re: Power q11 - Voltage graph for the loop
« Reply #10 on: November 15, 2011, 07:20:37 pm »
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Quote from: HarveyD on November 15, 2011, 07:15:56 pm
what did you guys put for the one where the guy turns the coil with his hand after DC current is removed
the graph that had heaps of loops on positive side of y axis. I think option A
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Dasher

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Re: Power q11 - Voltage graph for the loop
« Reply #11 on: November 15, 2011, 08:27:13 pm »
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VivaTequila

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Re: Power q11 - Voltage graph for the loop
« Reply #12 on: November 15, 2011, 10:08:26 pm »
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Quote from: Danielhogz on November 15, 2011, 07:20:37 pm
Quote from: HarveyD on November 15, 2011, 07:15:56 pm
what did you guys put for the one where the guy turns the coil with his hand after DC current is removed
the graph that had heaps of loops on positive side of y axis. I think option A

endorsing, it was A, the split ring commutator ensured that the current (which is AC) was reversed every 180 degrees (making it DC), therefore negative parts of the graph were flipped. It was A.
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ttn

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Re: Power q11 - Voltage graph for the loop
« Reply #13 on: November 15, 2011, 10:15:36 pm »
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Did rectangles also
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