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[" 13.A potentiometer "PQ" is set up to ...

[" 13.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 "K_(3)" is open."],[" The balance point is at a length "l_(1)cm" from "P" when "],[" two way key "K_(3)" is plugged in between "2" and "1," while "],[" the balance points is at a length "l_(2)cm" from "P" when "],[" key "K_(3)" is plugged in between "3" and "1." The ratio of "],[" two resistances "(R_(1))/(R_(2))" ,is found to be "]

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A potentiometer PQ is set up to comapre two resistances as shown in the figure. The ammeter A in the circuit reads 1.0 A when two way key K_(3) is open. The balance point is at a length l_(1) cm from P when two way key K_(3) is plugged in between 2 and 1, while the balance point is at a length l_(2) cm from P when key K_(3) is plugged in between 3 and 1. The ratio of the two resistance (R_(1))/(R_(2)) , is found to be-

A potentiometer PQ is set up to comapre two resistances as shown in the figure. The ammeter A in the circuit reads 1.0 A when two way key K_(3) is open. The balance point is at a length l_(1) cm from P when two way key K_(3) is plugged in between 2 and 1, while the balance point is at a length l_(2) cm from P when key K_(3) is plugged in between 3 and 1. The ratio of the two resistance (R_(1))/(R_(2)) , is found to be-

A potentiometer PQ is set up to comapre two resistances as shown in the figure. The ammeter A in the circuit reads 1.0 A when two way key K_(3) is open. The balance point is at a length l_(2) cm from P when two way key K_(3) is plugged in between 2 and 1, while the balance point is at a length l_(2) cm from P when key K_(3) is plugged in between 3 and 1. The ratio of the two resistance (R_(1))/(R_(2)) , is found to be-

For the arrangement of the potentimeter shown in the figure, The balance point is obtained at a distance 75 cm from A when the key k is open The second balance point is obtained at 60 cm from A when the key k is closed. Find the internal resistance of the battery E_(1) .

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A potentiometer circuit is setup as shown. The potential gradient across the potentiometer wire is k "volt"//cm and the ammeter present in the circuit reads. 1.0 A When two-way key is switched off. The balance point, when the key between the terminals (i) 1 and 2 (ii) 1 and 3, is plugged in, are found to be at lengths l_(2) cm and l_(2) cm respectively. The magnitudes, of the resistors R and X , in ohm, are then, equal, respectively, to

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