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)
Show Answer
Solution:
- 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
$$ 200 ohm \rightarrow 500 ohm $$
