@InvaderZim931 Well, a smaller resistor will allow more current flow, and this will typically mean more power consumption, so it will get hotter. With actual numbers, you could work out the power and the number of Joule or calories of heat dissipated.
@derekowens "so it will get hotter" do u mean the resistor or the device? because I happened to know that the bigger resistor the hotter the resistor would be. Can u please clear it for me?
@moezart94 I mean the resistor. If the resistance, in Ohms, is a larger number, then there will be more resistance, therefore less current flow, and less heat. As an example, a 100 Watt light bulb has less resistance than a 60 Watt light bulb. The 100 Watt bulb is definitely hotter.
P = I^2 * R. The Power depends on the current and on the resistance, but in the equation, the current is squared, so the amount of current is more significant in determining the heat.
@moezart94 The resistance is *part* of the reason for the heat. The current is the other part of the reason. And the effect of the current on the heat is more significant than the effect of the resistance.
What happens if one resistor burns out? Do the other bulbs increase or decrease in power and brightness? Why?
changl72 9 months ago
i have a question: when you have different resistors of different amounts, how is that related to temperature?
InvaderZim931 11 months ago
@InvaderZim931 Well, a smaller resistor will allow more current flow, and this will typically mean more power consumption, so it will get hotter. With actual numbers, you could work out the power and the number of Joule or calories of heat dissipated.
derekowens 11 months ago
@derekowens "so it will get hotter" do u mean the resistor or the device? because I happened to know that the bigger resistor the hotter the resistor would be. Can u please clear it for me?
moezart94 3 weeks ago
@moezart94 I mean the resistor. If the resistance, in Ohms, is a larger number, then there will be more resistance, therefore less current flow, and less heat. As an example, a 100 Watt light bulb has less resistance than a 60 Watt light bulb. The 100 Watt bulb is definitely hotter.
P = I^2 * R. The Power depends on the current and on the resistance, but in the equation, the current is squared, so the amount of current is more significant in determining the heat.
derekowens 3 weeks ago
@derekowens But isn't resistance the reason of the heat? therefore the more the resistance, the more the heat?
moezart94 3 weeks ago
@moezart94 The resistance is *part* of the reason for the heat. The current is the other part of the reason. And the effect of the current on the heat is more significant than the effect of the resistance.
derekowens 3 weeks ago
Thank you so much I now have an sound understanding of resistors in parallel
enolapapillion 11 months ago
Awesome, finally someone teaches Physics 2 on youtube. legit legit!!!!
AtlantiXYL 1 year ago
the real concept abt parallel resistors is cleared now....thank you sir...
zelunika 2 years ago 3
I have always had trouble understanding this concept, but this video clarified them :). I love your analogy with the water pumps and the building.
chrypton1 2 years ago
Nice work Derek , this is helping me with my Audio Engineering degree..What is the graphics program you used for this video?Thanks for sharing..
SaeBap 2 years ago 4