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The resistance of a potentiometer wire 8...

The resistance of a potentiometer wire 8 m long is 8 ohm. A high resistance box and a 2-volt accumulator are connected in series with it. What should be the value of the resistance in the box, if it is desired to have a potential drop of 1 micro volt per mm?

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To solve the problem, we need to determine the resistance in the high resistance box so that the potentiometer wire provides a potential drop of 1 microvolt per mm. ### Step-by-Step Solution: **Step 1: Understand the total potential and resistance.** - The total voltage supplied by the accumulator is 2 volts. - The resistance of the potentiometer wire is given as 8 ohms for a length of 8 meters. ...
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