This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: x axis has a length of 0.500 m and a diameter of 0.200 mm. It is made of a material that obeys Ohm's law with a resistivity of = 4.00 × 108 m. Assume that a potential of 4.00 V is maintained at x = 0 and that V = 0 at x = 0.500 m. (a) (2 points) What is the resistance ( R ) of the wire? (b) (2 points)What is the electric current in the wire? (c) (2points) What is the current density in the wire? Express vectors in vector notation. a) b) c) ( ) ( ) ( ) 8 2 4 4.00 10 m 0.500 m 0.637 1.00 10 m R A ρ π× Ω⋅ = = = Ω × l 4.00 V 6.28 A 0.637 V I R Δ = = = Ω ( ) 8 2 2 2 4 6.28 A ˆ ˆ ˆ 2.00 10 A m 200 MA m 1.00 10 m I A= = = × = × J i i i . Consider the system of capacitors shown in the figure ( C 1 = 3.00 µF, C 2 = 4.00 µF). (a) (2 points)Find the equivalent capacitance of the system. (b) Find the potential across each capacitor. (c) Find the charge on each capacitor. (d) Find the total energy stored by the group....
View
Full
Document
This note was uploaded on 11/01/2009 for the course PHY phy2049 taught by Professor Wilfredngwa during the Fall '09 term at University of Central Florida.
 Fall '09
 WilfredNgwa
 Physics, Capacitance, Power

Click to edit the document details