Electronics Part 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| What is resistance? | Opposition to the flow of current.
🗑
|
||||
| Opposition to the flow of current is known as _______. | Resistance.
🗑
|
||||
| What tool is used to measure resistance? | Ohmmeter
🗑
|
||||
| What is one unit of electrical resistance called? | Ohm
🗑
|
||||
| What is an ohm? | An ohm is the amount of resistance that will allow one ampere of current to flow if one volt of electrical pressure is placed on a conductor.
🗑
|
||||
| What is the symbol for an ohm? | Ω
🗑
|
||||
| Most cable and wire is currently made from _______. | Copper
🗑
|
||||
| What does Ohm's law state? | Ohm's Law states that voltage in volts is equal to the current in amperes multiplied by the resistance in ohms.
🗑
|
||||
| What is the formula for Ohm's law? | E=I*X
🗑
|
||||
| In Ohm's law, what does each letter represent? | E = Voltage
I = Current
R = Resistance
🗑
|
||||
| What does mA stand for? | Milliamphere
🗑
|
||||
| What is a milliampere? | A milliamhere is 1/1000 of an ampere.
🗑
|
||||
| How can a milliampere be converted to an ampere? | By moving the decimal point three places to the left.
Example: 500 mA would be the same as .5 A
🗑
|
||||
| What is a kilohm? | A Kilohm (KΩ) is 1,000 ohms.
🗑
|
||||
| What is the symbol for a kilohm? | KΩ
🗑
|
||||
| What is a megohms? | A megohm (MΩ) is 1,000,000 ohms.
🗑
|
||||
| What is the symbol for a megohm? | MΩ
🗑
|
||||
| How can a kilohm be converted into an ohm? | Move the decimal point three places to the right. 6 KΩ would then become 6,000 Ω.
🗑
|
||||
| How can a megohm be converted to an ohm? | Moving the decimal point 6 places to the right. 10MΩ would the become 10,000,000
🗑
|
||||
| What is a millivolt? | A millivolt is the same as 1/1000 of a volt.
🗑
|
||||
| What is the symbol for a millivolt? | mV
🗑
|
||||
| How can a millivolt be converted to a volt? | Move the decimal point 3 places to the left. 1000mV would be the same as 1 V.
🗑
|
||||
| What does KV stand for? | Kilovolt.
🗑
|
||||
| What does MV stand for? | Megavolts.
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
Cheetahman
Popular Science sets