What is the formula that links current (I), resistance (R), and voltage (V)?
V = voltage (V)
I = current (A)
R = resistance (Ω)
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How does temperature affect the resistance of wires and resistors?
Increasing the temperature will increase the resistance.
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Why does increasing the temperature of a wire increase its resistance?
At higher temperatures, the particles in the wire vibrate faster, which impedes (slows) the flow of electrons, increasing the resistance.
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How can we find the total resistance of n resistors in series?
Rtotal = combined resistance of n resistors (Ω)
R1 = resistance of resistor 1 (Ω)
R2 = resistance of resistor 2 (Ω)
Rn = resistance of nth resistor (Ω)
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How can we find the total resistance of n resistors in parallel?
Rtotal = combined resistance of n resistors (Ω)
R1 = resistance of resistor 1 (Ω)
R2 = resistance of resistor 2 (Ω)
Rn = resistance of the nth resistor (Ω)
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What is Ohm's law?
Ohm's law states that the current (I) through a conductor is directly proportional to the potential difference (V) and inversely proportional to the resistance (R).
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