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13. In the potentiometer circuit of figure, when the key K is inserted, balance length is found to be 20 cm for R = 5ohm and 30 cm for R = 10 ohm. The balance length if key is taken out, will be 1) 35 cm. 2) 45 cm. 3) 60 cm. 4) 50 cm |
| Answer» 13. In the potentiometer circuit of figure, when the key K is inserted, balance length is found to be 20 cm for R = 5ohm and 30 cm for R = 10 ohm. The balance length if key is taken out, will be 1) 35 cm. 2) 45 cm. 3) 60 cm. 4) 50 cm | |