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81. Two electrodes are maintained at a potential difference of 50V. An electron moving from cathode to anode gains kinetic energy equal to : (West Bengal/ NTSE Stage-1/2017) (A) 50 ~ 10-19 erg (B) 50 joule (C) 80x 10-19 Joule (D) 80 erg What will be the power consumed by a 50 2 wire if it is kept across a potential difference of 200 V? West Bengal NTSF Stage-1/2017) 82.

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