24.4a : Confirm that equation has the same units on both sides of equal sign 24.7 : confirm that equation has units of energy divided by time

Inquiry into Physics
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ISBN:9781337515863
Author:Ostdiek
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Chapter7: Electricity
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Problem 23Q: (Indicates a review question, which means it requires only a basic understanding of the material to...
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24.4a : Confirm that equation has the same units on both sides of equal sign 24.7 : confirm that equation has units of energy divided by time
rrent density J is the current per
it area at a point in a material.
- J = GE
o is the conductivity, a
property of the material.
E is the electric field at the point where we're evaluating 7.
(Ohm's law, microscopic version)
The microscopic version relates electrical
quantities at each individual point.
(24.4a)
Transcribed Image Text:rrent density J is the current per it area at a point in a material. - J = GE o is the conductivity, a property of the material. E is the electric field at the point where we're evaluating 7. (Ohm's law, microscopic version) The microscopic version relates electrical quantities at each individual point. (24.4a)
P is the power associated with
current through and voltage
across an electrical device.
P = IV
and V is the voltage.
I is the current...
(electric power)
P could be power dissipated in a resistor, converted to mechanical
energy in a motor, or produced in a battery or generator.
(24.7)
Transcribed Image Text:P is the power associated with current through and voltage across an electrical device. P = IV and V is the voltage. I is the current... (electric power) P could be power dissipated in a resistor, converted to mechanical energy in a motor, or produced in a battery or generator. (24.7)
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