Number 8 please We Help Teams and Ath x i: page Winter 20 x R LON-CAPA The Learn
ID: 1538711 • Letter: N
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Number 8 please
We Help Teams and Ath x i: page Winter 20 x R LON-CAPA The Learni x C A, B And c Please IC x ded/mcgilV402004209695.458bamcgill2/defi 48657 6066page?symbo uploaded ogill2%2fdefi a) The internal esistance of a battery whose emfis 28.8 V varies with the cuITent ng to the equation r (atb*I), where a 0.170 Q and b 0.020 S/A. What is the terminal voltage of the battery when I e 2.0 A? Submit Answer Tries 0 6 b What is the power dissipated in the battery when I 2.0 A? Submit Answer Tries 0 6 c) What is the terminal voltage in the battery when l 5.0 A 0/6 Due Friday March 03 02:00 pm EST Problem To avoid electrical fires wirings must be sufficiently thick What should be the diameter of a cu ire if it is to carry a maximum current of 9.0 A and produce no more than 20 Wofheat per meter of length? Due Friday March 03 02:00 pm EST) Submit Answer Tries 0/6 La Problem 9 Consider the circuit shown below: 570 530. S2R 420.2 R 840.2 E-9.00 V A ENGExplanation / Answer
power generate = I^2R
2= 9*9*R
R = 0.02469 ohm
reistance = rho*L/A
rho = 1.7*106-8 ohm-m
A = pi*r^2
0.02469 = 1.7*10^-8 *1 / (pi*r^2)
r = 4.68*10^-4 m
diameter = 2r = 2.468*10^-4 = 4.936*10^-4 m
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