Current Electricity Part 1

Section: Physics

Question : 44 of 100

Marks: +1, -0

A potentiometer PQ is set up to compare two resistances as shown in the figure. The ammeter A in the circuit reads 1.0 A when two way key K3 is open. The balance point is at a length l1 cm from P when two way key K3 is plugged in between 2 and 1, while the balance point is at a length l2 cm from P when key K3 is plugged in between 3 and 1. The ratio of two resistances

, is found to be :

[Main 8 April 2017]

l1
l1+l2
l2
l2−l1
l1
l1−l2
l1
l2−l1

Validate

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