A 5 ohm resistor is indicated by a single _ colour band around its body.
Correct answer: B. Green
- A. Red
- B. Green
- C. Blue
- D. Brown
Explanation
A carbon-composition resistor can have 4 to 6 bands. The assignment of colour according to their bands is shown in the table.The mnemonic to memorise the sequence of colours may be ''Big Boys Race Our Young Girls But Violet Generally Wins"
This question appeared on the UHS MDCAT 2008 paper, which you can sit online with every answer explained.
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About Resistance and Resistivity
Resistance measures opposition to current in a conductor and follows R = V/I for an ohmic conductor, while resistivity is an intrinsic property of the material. Questions use R = ρL/A, examine effects of length, cross-sectional area and temperature, and distinguish resistance, resistivity, conductance and conductivity.
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Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
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