12 Questions
What is the unit of resistance?
Ohm
What does the slope of the plot of current versus voltage for a resistor represent?
Resistance value
What does a positive power value indicate for a resistor?
Energy absorption
If a 560 Ω resistor has a current of 42.4 mA flowing through it, what is the voltage across the resistor and the power it is dissipating?
$23.7 V$ and $1.007 W$
What is the formula for resistance of a wire?
R=ρl/A
What is the unit of conductance?
Siemens (S)
What does an open circuit between A and B mean?
i=0, v=0
What is the equivalent resistance of a short circuit between A and B?
$R = 0 Ω$
What is the unit for the rate of flow of charge?
Amps
What does a positive power value indicate about an element?
It is absorbing energy
What does a negative power value indicate about an element?
It is supplying energy
What does the relationship between voltage and current define for a circuit element?
The resistance of the element
This quiz covers the concept of resistance and conductance in physics. It includes calculations related to resistance using the formula R=ρl/A and the concept of conductance as the reciprocal of resistance. Additionally, it discusses the relationship between resistance and wire geometry.
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