User:Meikebrand

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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

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