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NEET-XII-Physics

32: Electric Current in Conductors

with Solutions - page 5
Qstn# iv-19-a Prvs-QstnNext-Qstn
  • #19-a
    just after the connections are made and (b) after a long time when it is completely charged. (b) after a long time when it is completely charged.
    Ans : When the battery is being charged:
    Emf of the battery, E = 6 V
    Internal resistance of the battery, r = 10 Ω
    Potential difference, V = 9 V
    Net e.m.f. across the resistance while charging = 9 - 6 = 3 V
    `` \therefore \,\mathrm{\,Curre\,}\text{nt}=\frac{3}{10}=0.3\,\mathrm{\,A\,}``
    (b) When the battery is completely charged:
    Internal resistance, r' = 1 Ω
    `` \therefore \,\mathrm{\,Current\,}=\frac{3}{1}=3\,\mathrm{\,A\,}``
    Page No 199: (b) When the battery is completely charged:
    Internal resistance, r' = 1 Ω
    `` \therefore \,\mathrm{\,Current\,}=\frac{3}{1}=3\,\mathrm{\,A\,}``
    Page No 199:
  • #19-b
    after a long time when it is completely charged.
    Ans : When the battery is completely charged:
    Internal resistance, r' = 1 Ω
    `` \therefore \,\mathrm{\,Current\,}=\frac{3}{1}=3\,\mathrm{\,A\,}``
    Page No 199: