https://padlet.com/amna111x/duf25ya1glvgbkin en-us 2022-09-25 18:49:13 UTC 2023-01-11 11:03:50 UTC hello@padlet.com https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647053 Q1: what is resistance ?
A1: The measure of how strongly an object or a material impedes current produced by a potential difference is resistance.

Q2: what are the facts that affect  resistance ?
A2 :
- length
- cross-sectioal area
- temperature
- material

Q3: What is a resistor ?
A3: is device designed to have a specific resistance.

Q4 : How can we control the current ?
A4 : there are 2 ways
- by varying daltaV or R or both
- a second way to reduce the current to 0.1A

 
Q5 :Explain potentiometer?
A5 : an instrument used for measuring the unknown voltage by comparing it with the known voltage]]> 2023-01-11 10:50:16 UTC https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647053 https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647569 1/ the measure of how strongly an object or a material imbeds current produced by a potential deffrence is resistance 


2/
 length 
cross-section area 
temperature 
 material

3/  is a device designed to have a specific resistance

4/ we can change it by varying V,R]]> 2023-01-11 10:50:48 UTC https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647569 https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647580 1- Resistance is defined as potential difference divided by current .

2- Length - cross sectional area - temperature - material

3- is a device designed to have a specific resistance .

4- we can control the current by changing the value of potential or potential different . ]]> 2023-01-11 10:50:49 UTC https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647580 https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647603 1- Resistance is a measure of the opposition to current flow in an electrical circuit.
2- Length,  Resistance increases as length increases 
Cross- sectional area, resistance increases as the cross-sectional area decreases 
Temperature, resistance usually increases as temperature 
Material, Keeping length, cross sectional area, and temperature constant resistance varies with the material 
3- resistor is a device designed to have a specific resistance 
5- circuit breakers switches ]]> 2023-01-11 10:50:51 UTC https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647603 https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647750 1- Resistance is the how an objects allows current produced by potential difference will flow. 
2- Affect resistance
length increase R increase 
cross section are decrease R increase
Temperature increase R increase 
3- A device produced to have specific resistance 
4- Current can change by 
- Changing potential difference ( I increase)
- changing resistance (I decrease )
- or changing both 
5- A device that allows continues variation rather than step by step. ( resistor with a switch )]]> 2023-01-11 10:51:00 UTC https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647750 https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647811 1- What is Resistance? A measure of how strong an object or material impedes the current produced by a potential difference

2- What controls electric current? Resistance and protectors like a fuse, circuit breakers, and surge protectors can easily control electric currents in a circuit.


]]> 2023-01-11 10:51:03 UTC https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647811 https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647818 1-The measure of how strongly an object or material impedes current produced by a potential difference .
2-Lenght \ Cross-sectional area\Temperature \ Material .
3-is device designed to have a specific resistance .
4-I can be changed by varying V,R


]]> 2023-01-11 10:51:03 UTC https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647818 https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647870 1. measure of how strongly an object impedes current produced by potential difference.

2. length, cross-sectional area, temprature, material

3. a device designed to have a specific resistance.

4. I=v/r


]]> 2023-01-11 10:51:07 UTC https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647870 https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647996 1) current is how strong an object blocks current produced by a potential difference

2) length\temperature\material

3) a device designed to have a specific resistance

4)I can be changed my varying (Delta v) (R) or both

5) can be used to change current ]]> 2023-01-11 10:51:16 UTC https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440647996 https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440648173 1- the measure of how strongly an object or a material current produced by a potential difference .

2- length - cross sectional area temperature - material

3- is advice designed to have a specific resistance .]]> 2023-01-11 10:51:26 UTC https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440648173 https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440648275 1: resistance is the measure of how strong an object effect current produced by potential difference 
2 : length - cross - sectional area - temperature- material 
3 : a devise that have a specific resistance
4: Can be control by varying The potential difference ,R or both
5: Potentiometer can changed the current in circuits]]> 2023-01-11 10:51:34 UTC https://padlet.com/amna111x/duf25ya1glvgbkin/wish/2440648275