Current Electricity 5 Question 1

1. A $200 \Omega$ resistor has a certain colour code. If one replaces the red colour by green in the code, the new resistance will be

(a) $100 \Omega$

(b) $400 \Omega$

(c) $300 \Omega$

(d) $500 \Omega$

(2019 Main, 8 April I)

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Solution:

  1. Given, resistance is $200 \Omega$.

So, colour scheme will be red, black and brown.

Significant figure of red band is 2 and for green is 5 . When red (2) is replaced with green (5), new resistance will be

$$ 200 ohm \rightarrow 500 ohm $$



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