In the figure, &, 12V, E₂ = 6.0V, R₁ = 100, R₂-20 R₂-300 One point of the circuit is grounded (V0) (a) What are the sizes and directions (up, down, left, right) of the currents through the three resistances? (6p) (b) What is the electric potential at point A? (4p) B arte, 201
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