Exercise EE1-04.01 – Determining resistance values (Solution)

Prof. Dr. Thorsten Jungmann (last updated 2025-10-26)

Relates to EE1-04 Resistance

Task

The photos show the inside of a battery tester.
What are the values of the four resistors shown?

Solution

bn-gn-rd: $1.5\mathrm{k\Omega }$
bn-bk-og: $10\mathrm{k\Omega }$
bn-bk-bk: $10\Omega$
rd-rd-bn: $220\Omega$

all with gold in the fourth band: tolerance $\pm 5\%$

▶️ Full worked solution

◀️ Back to the task

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Solution

bn-gn-rd-gd (Brown-Green-Red-Gold):
1 – 5 – multiplier: 100
1 500 ohms (1.5 kΩ) with 5 % tolerance.

bn-bk-og-gd (Brown-Black-Orange-Gold):
1 – 0 – multiplier: 1000
10 000 ohms (10 kΩ) with 5 % tolerance.

bn-bk-bk-gd (Brown-Black-Black-Gold):
1 – 0 – multiplier: 1
10 ohms with 5 % tolerance.

rd-rd-bn-gd (Red-Red-Brown-Gold):
220 ohms with 5 % tolerance.