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JEEMAIN and NEET
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2002
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Q)
For a cell terminal P.D. is 2.2V when circuit is open and reduces to 1.8V when cell is connected to a resistance of R = 5
Ω
. Determine internal resistance of cell (r) is then : -
( A )
5
9
Ω
( B )
10
9
Ω
( C )
9
10
Ω
( D )
11
9
Ω
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