User:Meikebrand
HOMEWORK -1-
Circuit with one resistor
Brown, green, red, gold
- First digit=1, second digit=5, multiplier 100, tolerance= 5%
- 15x100=1500 1,5 k ohms
- R = V/I 9 V : 6 I = 1,5 kilo ohms
- I = V/R 9 V : 1,5 ohms = 6 ampere
- V = IxR 6 x 1,5 = 9 V
- 6 x 1,5 ohms = 9
- 9 volt battery
* What is the voltage across the resistor
Voltage drop is 0,1,4 V
* What is the current through the resistor
6 amp
* What happens to the current and voltage if you double the resistor value
Current stays the same and voltage doubles
* What happens to the current and voltage if you half the resistor value
Current stays the same and voltage is split in half
Circuit with two resistors
Brown, black, orange, gold
- First digit=1, second digit=0, multiplier 1, tolerance= 5%
- 1. x100=10 k ohms
- 9 volt battery
- R = V/I 9 V : 6 I = 10 kilo ohms
- I = V/R 9 V : 10 ohms = 0,9 ampere
- V = IxR 6 x 1,5 = 9 V
- Voltage drop = 0,9 x 10 ohms = 9
* What is the voltage across each resistor
Voltage drop is 9
* What is the current through each resistor
9 amp
* What happens to the current and voltage if you double the resistor value of one resistor
Current stays the same and voltage doubles
* What happens to the current and voltage if you half the resistor value of one resistor
Circuit with three or more series resistors
Orange, orange, orange, gold
- First digit=3, second digit=3, multiplier 1, tolerance= 5%
- 3.3x100=33 k ohms
- 9 volt battery
- R = V/I 9 V : 0,27 I = 33 kilo ohms
- I = V/R 9 V : 33 ohms = 0,27 ampere
- V = IxR 0,27 x 33 = 9 V
- Voltage drop = 0,27 x 33 ohms = 8,91 drop
* What is the voltage across each resistor
Voltage drop is 8,9
* What is the current through each resistor
9 amp
* What happens to the current and voltage if you double the resistor value of one resistor
Current stays the same and voltage doubles
* What happens to the current and voltage if you half the resistor value of one resistor
