Physics 9702 · AS & A Level · Kirchhoff's laws

Kirchhoff's laws — practice question

For cell X, the e.m.f. is $2.0\,\text{V}$ and the internal resistance is $2.0\,\Omega$. For cell Y, the e.m.f. is $1.6\,\text{V}$ and the internal resistance is $1.2\,\Omega$. The two cells are connected to a resistor of resistance $0.8\,\Omega$, as illustrated. What is the current in cell X?

  • A$0.10\,\text{A}$
  • B$0.50\,\text{A}$
  • C$0.90\,\text{A}$
  • D$1.0\,\text{A}$

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