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Transcript

A S1 S2 ΔV = 120 V R1 = 20 Ω R2 = 10 Ω R1 R1 R1 R2 Find the current at point A for all possible combinations of switch settings. (In each case, redraw the circuit in the simplest possible way before finding the current.) ΔV = 6 V R2 A R1 = 100 Ω R2 = 50 Ω B ΔV = 5 V ΔV = 4 V R1 Find the current in each resistor and the potential difference between points A and B. R1 R3 R2 R R1 = 10 Ω R2 = 4 Ω R3 = 7 Ω ΔV = 24 V 1. 2. 3. Assume R = 5 Ω. What is the current running through each resistor in the circuit? Assume R is very large (say, 5000 Ω). What then is the current running through the battery? What physical situation does this correspond to? Assume R is very small (say, 0.001 Ω). What then is the current running through the battery? What physical situation does this correspond to?