1. Give the resistance and tolerance of a resistor that has the following markin

ID: 1874630 • Letter: 1

Question

1. Give the resistance and tolerance of a resistor that has the

following markings (left to right, as in Figure 5.2a): brown, black,

and gold.

2. Give the resistance and tolerance of a resistor that has the

following markings: red, red, orange, and gold.

3. Calculate the equivalent resistance of the circuit in 5.2b if R1 =

2 Ohms, R2 = 5 Ohms, and R3 = 10 Ohms.

4. Calculate the equivalent resistance of the circuit in 5.2c if R1 =

R1 Figure 5.2: Three of the possible ways to arranuge three resistors and an EMF source.

equivalent resistance for circuit 5.2b

resistor R1, R2 & R3 are in parallel so

equivalent reisistance = 1/(1/2 + 1/5 + 1/10) = 1.25 ohm

equivalent resistance for circuit 5.2c

resistor R2 & R3 are in parallel and in series with R1, so

equivalent reisistance = 2 + 5*10/(5+10) = 5.33 ohm

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