A portable coffee heater supplies a potential difference of12.0 V across a Nichrome heating element with a resistanceof 2.00 Ω. (a) Calculate the power consumed by the heater.(b) How many minutes would it take to heat 1.00 kg of coffeefrom 20.0°C to 50.0°C with this heater? Coffee has a specificheat of 4 184 J/(kg ⋅ °C). Neglect any energy losses to theenvironment.
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.
A portable coffee heater supplies a potential difference of
12.0 V across a Nichrome heating element with a resistance
of 2.00 Ω. (a) Calculate the power consumed by the heater.
(b) How many minutes would it take to heat 1.00 kg of coffee
from 20.0°C to 50.0°C with this heater? Coffee has a specific
heat of 4 184 J/(kg ⋅ °C). Neglect any energy losses to the
environment.
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 3 images
