Question

the variation of potential with current for three resistor P,Q and R is shown in figure. Find the value of these resistance. what will be the ratio P:Q:R ?​

Answer 1

The four resistances of Wheatstone's bridge are 2,2,2 and

6+s

6s

In case of a balanced bridge:

⇒

2

2

=

2

6+s

6s

⇒

6+s

6s

=2

⇒3s=6+s

⇒2s=6

⇒s=3 Ohm

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