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AP EAMCET2008PhysicsCurrent Electricity

A current of 2 ~A flows in an electric circuit as shown in figure. The potential difference (V_R-V_S ) , in volts (V_R . and V_S are potentials at R and S respectively) is

Options

  1. A-4
  2. B+2
  3. C+4
  4. D-2

Correct answer

C. +4

Step-by-step solution

Current through each arm gathered P R Q and P S Q=1 ~A V_P-V_R=3 ~V V_P-V_S=7 ~V gathered From Eqs. (i) and (ii), we get V_R-V_S=+4 ~V

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