- #1
Steve143
- 10
- 0
hello,
i keep getting conflicting information on these and it confuses me
1) First my book says "In series circuit the voltage supplied by the cell is "shared" between all the components, so the more bulbs you add to a series circuit the dimmer they all become."
If you have a circuit with 2 components on it, called bulb 1 and bulb 2. Why would bulb 2 which is further along than bulb 1 lower the voltage bulb 1 receives? And why would you put a voltmeter in parallel with the object you are measuring if voltage is the same across the entire circuit, in that case you could just put it anywhere?
This says the opposite.. i can't post the link it won't let me.
"However, the voltage at different points changes, as the electromotive force or pressure, drops from a potential difference of 12 volts as it leaves the battery, to virtually no difference, no voltage at all, as it returns.
This is called voltage drop. It is caused by the pressure lost in driving the current through the resistor.
After the first resistor, voltage has dropped from 12 to 8 volts. After the second, it’s down to 4 volts. After the third, zero. "
Which suggests you could have a bright bulb and then a dim bulb further on in the series when the voltage drops lower. But this is the opposite of what the first paragraph said.
So either everything receives the same voltage or the voltage drops past each component, it can't be both
2) What energy does the power station give electrons which is then taken by appliances and turned into other forms? I read it was kinetic energy but then someone else told me it's not so I am wondering what it is because I can't find information about this anywhere.
i keep getting conflicting information on these and it confuses me
1) First my book says "In series circuit the voltage supplied by the cell is "shared" between all the components, so the more bulbs you add to a series circuit the dimmer they all become."
If you have a circuit with 2 components on it, called bulb 1 and bulb 2. Why would bulb 2 which is further along than bulb 1 lower the voltage bulb 1 receives? And why would you put a voltmeter in parallel with the object you are measuring if voltage is the same across the entire circuit, in that case you could just put it anywhere?
This says the opposite.. i can't post the link it won't let me.
"However, the voltage at different points changes, as the electromotive force or pressure, drops from a potential difference of 12 volts as it leaves the battery, to virtually no difference, no voltage at all, as it returns.
This is called voltage drop. It is caused by the pressure lost in driving the current through the resistor.
After the first resistor, voltage has dropped from 12 to 8 volts. After the second, it’s down to 4 volts. After the third, zero. "
Which suggests you could have a bright bulb and then a dim bulb further on in the series when the voltage drops lower. But this is the opposite of what the first paragraph said.
So either everything receives the same voltage or the voltage drops past each component, it can't be both
2) What energy does the power station give electrons which is then taken by appliances and turned into other forms? I read it was kinetic energy but then someone else told me it's not so I am wondering what it is because I can't find information about this anywhere.