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Resistance and Resistivity

A carbon resi...

Question

A carbon resistance reads Red - Red - Black. What is its resistance?

A

220 ohm

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B

2.2 ohm

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C

0.22 kiloohm

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D

22 ohm

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Solution

The correct option is D
22 ohm

Value for first colour red is 2

Value for second colour red is also 2

The multiplier for black is 10⁰

Resistance = 22 x 10⁰= 22 ohm

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