Find the electric field as a function of r outside sphere

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Reference no: EM13338782

1) An aluminum wire has a length of 20m and adiameter of 0.0025in. It is connected to a 9.35V battery. The resistivity of aluminium is 2.65x10^-8(ohm(m))a).

a) calculate the resistance of the wire.

b) what is the current through the wire?

c) what is the power dissapated by the wire?

2) A sphere has a radius of 12.8cm, and a charge per unit volume given by 8r^3. (dV=4(pi)r^2 (dr))

a) Find the electric field as a function of r inside the sphere.

b) Find the electric field as a function of r outside the sphere.

Reference no: EM13338782

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