• Congratulations to the Class of 2024 on your results!
    Let us know how you went here
    Got a question about your uni preferences? Ask us here

MC Q19 Physics 2012 (1 Viewer)

iBibah

Well-Known Member
Joined
Jun 13, 2012
Messages
1,374
Gender
Male
HSC
2013
It never asked for the most heat though, it said most rapidly.
 

Deliriously

Member
Joined
Dec 16, 2010
Messages
187
Location
Sydney
Gender
Male
HSC
2013
But wouldn't the saucepan with high resistance produce more heat from eddy currents hence heat up faster?
 

superSAIyan2

Member
Joined
Apr 18, 2012
Messages
320
Gender
Male
HSC
2013
But doesn't higher resistance result in more heat generated?
EDIT: I'm confused even more now.
If the metal has high resistance then less eddy currents will flow through it.

Edi: and thus less heat being produced by resistive heating
 

Menomaths

Exaı̸̸̸̸̸̸̸̸lted Member
Joined
Jul 9, 2013
Messages
2,373
Gender
Male
HSC
2013
V=IR
P=VI
P(loss) = I^2*R
Assuming V is constant in first equation, looking at the third equation, what do you want to lower in the first equation to increase the P(loss)?


(that's how I did it anyway)
 

iBibah

Well-Known Member
Joined
Jun 13, 2012
Messages
1,374
Gender
Male
HSC
2013
Deliriously does it make sense now?
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top