as-shown-in-the-figure-a-circuit-consists-of-two-ideal-electromotive-force-emf-s

Question

As shown in the figure, a circuit consists of two ideal electromotive force (emf) sources and eight resistors. When the current flows through the resistor "R", it produces heat at a rate of 3.0 W. Find i) the value for the emf (E) and ii) the value of the positive terminal of the unknown power source.

Circuit diagram showing resistors and emf sources for Kirchhoff's Loop Rule in physics.

Accepted Answer

i) E = 1.15 V

ii) The positive terminal is connected to N

Answer

i) E = 0.75 V

ii) The positive terminal is connected to M

Answer

i) E = 3.25 V

ii) The positive terminal is connected to M

Answer

i) E = 12.5 V

ii) The positive terminal is connected to N