An electrical space heater uses coils of Nichrome wire to produce heat. Nichrome has a resistivity of ρ = 1.0 × 10−6 Ω · m. When plugged in to a regular household socket providing 120 V, the space heater uses 1400 W of power. If the wire has a diameter of 1.00 mm, how long is the piece of the wire? [Answer: l = 8.1 m]
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
An electrical space heater uses coils of Nichrome wire to produce heat. Nichrome has a resistivity of
ρ = 1.0 × 10−6 Ω · m. When plugged in to a regular household socket providing 120 V, the space heater uses 1400 W of power. If the wire has a diameter of 1.00 mm, how long is the piece of the wire? [Answer: l = 8.1 m]
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