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Question: Answered & Verified by Expert
A carbon film resistor has colour code Green Black Violet Gold. The value of the resistor is
PhysicsMagnetic Effects of CurrentKCETKCET 2014
Options:
  • A \( 50 \mathrm{M} \Omega \)
  • B \( 500 \mathrm{M} \Omega \)
  • C \( 500 \pm 5 \% M \Omega \)
  • D \( 500 \pm 10 \% M \Omega \)
Solution:
1329 Upvotes Verified Answer
The correct answer is: \( 500 \pm 5 \% M \Omega \)
Given, colour code on resistor is
Green $-5$; Black $-0$; Violet $-7$; Gold $-5 \%$
First and second band corresponds to digit, third band corresponds to multiplier and fourth band corresponds to
tolerance. Therefore, the value of resistor i
$50 \times 10^{7} \pm 5 \% \Omega=500 \times 10^{6} \pm 5 \% \Omega$
$=500 \pm 5 \% \mathrm{M} \Omega$

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