Question

For the circuit shown in figure, choose the correct option (s) :

• A. The rate at which chemical energy of cell 2 is converting into electrical energy is 5W
• B. The rate at which energy is dissipated in the circuit is 2.5W
• C. The rate at which chemical energy of cell-1 produced is 2.5W
• D. The cell-2 is discharging and cell-1 is charging

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A The rate at which chemical energy of cell 2 is converting into electrical energy is 5W
B The rate at which chemical energy of cell-1 produced is 2.5W
C The rate at which energy is dissipated in the circuit is 2.5W
D The cell-2 is discharging and cell-1 is charging

$I=\frac{10-5}{4+2+4}=0.5A$
$P=VI=10\times 0.5=5W$
$I^{2}R=(0.5{)}^2\times 10=2.5W$
$P=VI=5\times 0.5=2.5W$
Cell -2 having higher voltage and being connected in opposite polarity, charges up Cell - 1.