1. A circuit similar to the one you will be measuring has a current of 0.15 A fl

Question

1. A circuit similar to the one you will be measuring has a current of 0.15 A flowing when the voltage is 6 V.
a) What is the measured value of the resistance?
b) What color code does the resistor probably have? (See ‘Reading Resistor Codes’ on page 1 of this lab to answer this question; assume the uncertainty is 5%.)

c) What is the current when the voltage is reduced to 1.5 volts?

2.. What is the lowest and highest value of resistance a yellow-red-black resistor would usually have if it has a silver tolerance band?

Explanation / Answer

a) R = V/I = 6/0.15 = 40 ohms

b) Yellow,black,Black,gold

c) I=1.5/40 = 0.0375 A

d) Yello Red Black

42*10^0 = 42 ohms +-10 %

So max= 46.2 ohms

min=37.8 ohms

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