4. Using a 1 W resistor (R = 4700), vary the input voltage from 6 to 20 volts. Measure V and I

and calculate the resistance R (by calculating the ratio V/I) and the power dissipated in the

resistance (by calculating the product VI). As the measurement proceeds, touch the resistor

from time to time to observe the temperature rise. Record the results in Table 2.

H

COLOR

Black

Brown

Red

Orange

Yellow

Green

Blue

Violet

Grey

White

Gold

Silver

4-Band-Code

2%, 5%, 10%

1st BAND

0

1

2

3

4

5

10

7

00

9

2nd BAND

0

1

5-Band-Code

2

3

4

5

6

7

8

9

0.1%, 0.25%, 0.5%, 1%

3rd BAND

0

1

2

3

4

5

6

7

8

9

MULTIPLIER

10

100

10002

1KQ

10KQ

100K

1ΜΩ

10ΜΩ

0.1

0.01

560k ± 5%

TOLERANCE

± 1%

± 2%

±0.5%

±0.25% (C)

±0.10% (B)

±0.05%

± 5%

± 10%

2370±1%

Po

(1)

(K)