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Unformatted text preview: the ammeter 1. increases 2. decreases 3. does not change 45%
35% 20% 1. 2. 3. Kirchhoﬀ’s Rules • There are ways in which resistors can be connected so that the circuits formed cannot be reduced to a single equivalent resistor. • Two rules, called Kirchhoﬀ’s Rules, can be used instead. Statement of Kirchhoﬀ’s Rules • JuncBon Rule – The sum of the currents entering any juncBon must equal the sum of the currents leaving that juncBon. • A statement of ConservaBon of Charge • Loop Rule – The sum of the potenBal diﬀerences across all the elements around any closed circuit loop must be zero. • A statement of ConservaBon of Energy More About the JuncBon Rule • I1 = I2 + I3 • From ConservaBon of Charge • Diagram b shows a mechanical...
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This document was uploaded on 01/14/2014.
 Winter '14
 Resistance

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