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Shane Macguire Grade: upto college level
        the potential difference across the terminals of a battery of emf 12 V and internal resistance 2 Ω drops to 10 V when it is connected to a silver voltmeter. Find the silver deposited at the cathode in half an hour. Atomic weight of silver is 107.9 g/mole.
3 years ago

Answers : (1)

Deepak Patra
askIITians Faculty
474 Points
										Sol. For potential drop, t = 30 min = 180 sec

V base i = V base f + iR ⇒ 12 = 10 + 2i ⇒ i = 1 Amp
m = Zit = 107.9/96500 * 1*30*60 = 201 g = 2 g
3 years ago
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