3. Real Battery and Single Loop circuits… What’s the current ? Conservation of energy: Kirchoff’s first Law: Sum of voltages in a closed loop is zero. Real Circuit with ammeter and voltmeter
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6. Example 1 What is current through battery? What is current through i 2 ?
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8. Problem 2 Find the currents in each of the three legs of the circuit, Three unknowns, need three equations. Also since batteries are in there cannot reduce the resistances since none in parallel or series
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13. What’s V R across resistor? Find the current and multiply by R