- #1
paebo
- 5
- 0
Guys I need your help about resistors...
These are the questions:
1. You have 4 identical resistors, each with resistance of 5 ohms. Show how you will connect the four resistors to get an equivalent resistance of 5 ohms.
(hint: there is more than one way)
2. As more doors are opened in a crowded room, the resistance to motion of people trying to leave the room is reduced. How is this similar to what happens when more branches are added to parallel circuit?
3. Are household circuits normally wired in series or in parallel? Why?
4. Biomedical Application. The parts of the body that are more sensitive to electric currents are the brain, the chest muscles, and the nerve centers that controls respiration and the heart. A current of 1 mA passing through the body will be barely noticeable, but a current of 80 mA will surely be fatal unless it is immeadiately stopped. In most situations, the amount of current that will flow into the body will depend on the condition of the skin at contact locations. Dry skin will have a high resistance but damp or wet skin will have low resistance. Why is this so?
Hope you can help me...
Thanks a lot
These are the questions:
1. You have 4 identical resistors, each with resistance of 5 ohms. Show how you will connect the four resistors to get an equivalent resistance of 5 ohms.
(hint: there is more than one way)
2. As more doors are opened in a crowded room, the resistance to motion of people trying to leave the room is reduced. How is this similar to what happens when more branches are added to parallel circuit?
3. Are household circuits normally wired in series or in parallel? Why?
4. Biomedical Application. The parts of the body that are more sensitive to electric currents are the brain, the chest muscles, and the nerve centers that controls respiration and the heart. A current of 1 mA passing through the body will be barely noticeable, but a current of 80 mA will surely be fatal unless it is immeadiately stopped. In most situations, the amount of current that will flow into the body will depend on the condition of the skin at contact locations. Dry skin will have a high resistance but damp or wet skin will have low resistance. Why is this so?
Hope you can help me...
Thanks a lot