ATAR Notes: Forum

VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Physics => Topic started by: happygolucky11 on August 06, 2012, 06:49:37 pm

Title: Quick Question
Post by: happygolucky11 on August 06, 2012, 06:49:37 pm
Hi!

I'm just wondering, does the speed of a magnet which is entering a solenoid, affect the size of the EMF generated?

Thanks :)
Title: Re: Quick Question
Post by: xZero on August 06, 2012, 10:04:23 pm
Yes, higher velocity -> higher change in magnetic flux -> higher EMF generated
Title: Re: Quick Question
Post by: panicatthelunchbar on August 07, 2012, 04:47:59 pm
Another question, if someone can help with.

Do we use the RMS or peak voltage when solving questions? How do we know which one to use?
Title: Re: Quick Question
Post by: paulsterio on August 07, 2012, 08:40:44 pm
Quote from: panicatthelunchbar on August 07, 2012, 04:47:59 pm
Another question, if someone can help with.

Do we use the RMS or peak voltage when solving questions? How do we know which one to use?

Generally RMS, but it depends on the question - you rarely use peak voltages

Quote from: happygolucky11 on August 06, 2012, 06:49:37 pm
I'm just wondering, does the speed of a magnet which is entering a solenoid, affect the size of the EMF generated?



The faster it moves through, the lesser the time, the greater the EMF.