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Unformatted text preview: then your voltage drop is +iR volts Negative voltage drops: (a) If you go through an EMF source from “” to “+“ terminal, then your voltage drop is (E) volts (b) If you go through resistor R in the direction opposite to the current, then your voltage drop is (iR) volts Voltage drop across a resistor is measured by a voltmeter Æ voltmeter is connected IN PARALLEL to the resistor Voltmeter should not draw any significant current from the resistor Æ voltmeter must have a HUGE RESISTANCE Current through resistor is measured by an ammeter Æ connect the ammeter IN SERIES with the resistor Ammeter should not modify the current flowing through the resistor Æ ammeter must have a TINY RESISTANCE Energy balance: calculate (a) energy of the capacitor U E and (b) work done by the battery W B Energy balance: calculate (a) energy of the capacitor U E and (b) work done by the battery W B...
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 Spring '08
 Turner
 Current, Power

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