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Question : 13 of 150
Marks:
+1,
-0
Solution:
The given arrangement represents a metre bridge, which works on the Wheatstone bridge principle
‌=‌Here,
‌‌P=20‌cm=0.2mQ=80‌cm=0.8mR= unknown resistance
S=80Ω∴‌‌=‌⇒R=‌=20Ω
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