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In measuring a voltage, a voltmeter uses some current from the circuit. Consequently, the voltage measured is only an approximation to the voltage present when
In measuring a voltage, a voltmeter uses some current from the circuit. Consequently, the voltage measured is only an approximation to the voltage present when the voltmeter is not connected. Consider a circuit consisting of two 1500 Q resistors connected in series across a 60.0V battery. A nondigital voltmeter has a fullscale voltage of 60.0 V and uses a galvanometer with a fullscale deection of 5.00 mA. What is the difference (VA VB} between A) the voltage across one of the two resistors and B) the voltage that this voltmeter registers when it is connected across one of the two resistors? 0 3.5V 0 1.8V 0 0.0V 0 3.5V 0 -1.8V
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