Energy lost due to resistance?

In summary, resistance is the opposition that a material or object presents to the flow of electricity, causing a decrease in the amount of energy that can be transferred. Factors such as material, length, thickness, and temperature contribute to energy loss due to resistance. While it cannot be completely eliminated, it can be minimized through the use of materials with low resistance, shorter and thicker wires, and regular maintenance. Ohm's Law and a multimeter can be used to calculate and measure the amount of energy lost due to resistance.
  • #1
radaballer
86
0
If electricity passes through a system at 12 volts, with 0.42 Amps of current, and 28.8 ohms of resistance, how do you calculate the energy lost in joules?
 
Physics news on Phys.org
  • #2
radaballer said:
If electricity passes through a system at 12 volts, with 0.42 Amps of current, and 28.8 ohms of resistance, how do you calculate the energy lost in joules?

Power multiplied by time...
 
  • Like
Likes radaballer
  • #3
[itex]P=I^2R[/itex] is energy loss per unit time.
 

Related to Energy lost due to resistance?

1. What is resistance in terms of energy?

Resistance refers to the opposition that a material or object presents to the flow of electricity. It can be thought of as a force that slows down the movement of electric charges and converts some of their energy into heat.

2. How does resistance affect the flow of energy?

Resistance causes a decrease in the flow of electrical current, which in turn reduces the amount of energy that can be transferred. This is because some of the electrical energy is converted into heat as it encounters resistance in a circuit.

3. What factors contribute to energy loss due to resistance?

Several factors contribute to energy loss due to resistance, including the material of the conductor, length and thickness of the wire, and temperature. Materials with higher resistance, longer wires, and smaller diameters will result in more energy loss.

4. Can energy loss due to resistance be prevented?

While it is impossible to completely eliminate energy loss due to resistance, it can be minimized through the use of materials with low resistance, shorter and thicker wires, and keeping temperatures low. Additionally, proper maintenance and regular checks of electrical systems can help reduce energy loss.

5. How is the energy lost due to resistance calculated?

The energy lost due to resistance can be calculated using Ohm's Law, which states that the amount of energy lost is equal to the square of the current multiplied by the resistance. It can also be measured using a multimeter, which can provide the resistance value and calculate the energy loss.

Similar threads

  • Electromagnetism
Replies
16
Views
926
Replies
7
Views
1K
Replies
2
Views
910
Replies
4
Views
1K
Replies
2
Views
559
Replies
5
Views
1K
  • Electromagnetism
Replies
7
Views
1K
Replies
11
Views
2K
Replies
1
Views
902
  • Electrical Engineering
Replies
10
Views
1K
Back
Top