Physics Electricity and Magnetism Resistance and Resistivity
A NEGLIGIBLY SMALL current is passed through a wire of length 15 m and of uniform cross-section 60x 10^7 m2 and its resistance is measured to be 50.what is the restivity of the material at the temperature of the experiment.
50 what? 50 ohms?
rho = sp resistivity = R*A/l
A = 60E7 m^2
R = 50 ohms
l = 15 m
Solve for rho
You can ask a new question or answer this question .
Similar Questions
Top answer:
Use Ampère's law: http://en.wikipedia.org/wiki/Amp%C3%A8re's_circuital_law 2 pi r B(r) = Integral
Read more.
Top answer:
I was hoping you would be showing your work. The formula F = B I L should be useful here. They have
Read more.
Top answer:
Question 1: The sentence "Fuses are an important means to keep homes safe from electrical hazards"
Read more.
Top answer:
Well, well, well, it seems like we have a shocking situation here, doesn't it? Let me calculate the
Read more.
Top answer:
To determine the force of attraction between the wires, we can use the formula: Force = (μ₀ *
Read more.
Top answer:
Oh, I see we're discussing some shocking business here! Well, let me electrify you with the answer!
Read more.
Top answer:
To determine the force of attraction between the wires, we can use the formula for the magnetic
Read more.
Short Circuit What happens when you blow a fuse? Current flowing through a wire heats the wire. The length of a wire affects its
Top answer:
Question 1: The sentence that best states a central idea of "Short Circuit" is: Fuses are an
Read more.
Top answer:
In this situation, F = B I L where L is the length of the wire. Therefore, B = F/(IL) You got the
Read more.
Top answer:
To determine the current in the second wire, we can use the formula for the Magnetic Force between
Read more.