My Math Forum  

Go Back   My Math Forum > Science Forums > Physics

Physics Physics Forum


Reply
 
LinkBack Thread Tools Display Modes
March 14th, 2017, 03:37 PM   #1
Member
 
Joined: Nov 2016
From: Ireland

Posts: 67
Thanks: 2

Find power in controlled voltage

Right so I've done a whole Mesh analysis thing and found the current and all that good stuff.

Now it asks me to find the power of the controlled voltage source.

It's a diamond shape - But with the neg and positive symbols inside.
But it says:

10 ix beside it.

I've worked out that 0.34 = ix

so is it's voltage simply 3.4V * Current

Current here seems to be equal to (i1-i2)

Hmmm tricksy...

So is that it ?
Kevineamon is offline  
 
March 14th, 2017, 04:22 PM   #2
Senior Member
 
Joined: Feb 2016
From: Australia

Posts: 1,293
Thanks: 442

Math Focus: Yet to find out.
Bit hard to be sure without a diagram... But i suppose it's o.k. Test, if possible with other power relations,

$P = IV,$
$P = I^2 R,$
$P = \frac{V^2}{R}.$
Joppy is offline  
March 14th, 2017, 05:15 PM   #3
Member
 
Joined: Nov 2016
From: Ireland

Posts: 67
Thanks: 2



Here we go - I put the arrows in myself as you can probably tell
That lil 10ix dude at the bottom there.
Kevineamon is offline  
March 14th, 2017, 05:31 PM   #4
Member
 
Joined: Nov 2016
From: Ireland

Posts: 67
Thanks: 2

Apologies for the massee picture btw - photobucket does that - such a suckee host.

This was the math I got

P=VI
V=10*0.34A
P=3.4(i1-i2)
P=3.4(i1-i2)
P=3.4(18/53)-3.4(-6/53)
306/265+17/45

731/477 ≈1.53W
Kevineamon is offline  
Reply

  My Math Forum > Science Forums > Physics

Tags
controlled, find, power, voltage



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
breakdown voltage and current Kinroh Physics 1 March 14th, 2016 01:36 AM
A way of NOT achieving controlled thermonuclear fusion Carl James Mesaros Physics 2 November 24th, 2014 01:54 AM
A possible basis for controlled thermonuclear fusion Carl James Mesaros Physics 9 June 2nd, 2014 05:59 AM
For a sinusoidal voltage trace... r-soy Physics 2 July 4th, 2011 01:59 PM
what is terminal voltage r-soy Physics 0 January 3rd, 2011 08:45 AM





Copyright © 2017 My Math Forum. All rights reserved.