1
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

If $$P=Q=R=10\Omega$$ and $$S=20\Omega$$, then what resistance should be joined with S to balance the Wheatstone's network?

A
Join a resistance of 10$$\Omega$$ in series with S
B
Join a resistance of 10$$\Omega$$ in parallel with S
C
Join a resistance of 20$$\Omega$$ in parallel with S
D
Join a resistance of 20$$\Omega$$ in series with S
2
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

To the potentiometer wire of length L and 10$$\Omega$$ resistance, a battery of emf 2.5 V and a resistance R are connected in series. If a potential difference of 1 V is balanced across L/2 length, the value of R in $$\Omega$$ will be

A
1
B
1.5
C
2
D
2.5
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