Just being careful: about the copyright thing, am I allowed to refer to this as a source in my A-level (English equivalent of high school) physics coursework? I don't really want to incur the wrath of the FBI.
The resistivity would have to be converted to 2.44x10^-8 ohms-meters; right now it's in ohms-cm. Then you'd get the 0.31 ohms we got in the video. - bob
At the end when you find your final answer, shouldn't it be 0.311 times 10 to the negative something? Or more like 3.11 x 10^-4?
It seems like since you're dividing a number times 10^-6 by a number times 10^-3, the final answer should have a 10^-X as well because the numbers are so tiny.
@hottiepants87 no because the number x10^-6 is first multiplied by 1000 (which is x10^3) which takes the power to -3. Then its divided by a number x10^-3, giving the answer without a power.
lol sorry for proving u wrong a whole year later. im now revising for my physics A Level.
? 0:16
1995a1995z 11 months ago
Just being careful: about the copyright thing, am I allowed to refer to this as a source in my A-level (English equivalent of high school) physics coursework? I don't really want to incur the wrath of the FBI.
IKILLYOUWITHMYMIND 1 year ago
I thought the area was done in CM circular mils instead of cm centimeters
message2blackwomen 1 year ago
Keira Knightly?
x69Crunchyx 1 year ago
Thanks a lot Dr. You are great teacher.
adamkazmi 2 years ago
converting the units to the SI before calculating
i got
[(2.44x10^-6)x10] / [pi((5x10^-4)^2)] = 31.06ohms
have i done something wrong?
everything is in meters
kakkannon 2 years ago
The resistivity would have to be converted to 2.44x10^-8 ohms-meters; right now it's in ohms-cm. Then you'd get the 0.31 ohms we got in the video. - bob
OlympicCollege 2 years ago
thanks man!
rcabbage789 2 years ago
you made it nice and clear
thank you
alphadot 2 years ago
Hi Dr. Abel,
At the end when you find your final answer, shouldn't it be 0.311 times 10 to the negative something? Or more like 3.11 x 10^-4?
It seems like since you're dividing a number times 10^-6 by a number times 10^-3, the final answer should have a 10^-X as well because the numbers are so tiny.
ps. These videos are GREAT.
hottiepants87 3 years ago
@hottiepants87 no because the number x10^-6 is first multiplied by 1000 (which is x10^3) which takes the power to -3. Then its divided by a number x10^-3, giving the answer without a power.
lol sorry for proving u wrong a whole year later. im now revising for my physics A Level.
And thanks Dr. Abel for the video, it helps.
W3ZTL3Y 1 year ago