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An unknown resistance R1 ​ is connecte...

An unknown resistance R1 ​ is connected in series with a resistance of 10 ohm. This combination is connected to one gap of a metre bridge, while other gap is connected to another resistance R2 ​ . The balance point is at 50 cm. Now, when the 10 ohm resistance is removed, the balance point shifts to 40 cm.Then, the value of R1 ​ is

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In an electrical circuit resistances can be connected In series or parallel or combination or both:- If R_1 and R_2 are two resistors connected in series whatistheir effective resistance.

In an electrical circuit resistances can be connected in series or parallel or combination of both.If R_1 and R_2 are two resistors connected in series what is their effective resistance.