Why Does My Series Circuit Show a Voltage Discrepancy?

AI Thread Summary
The series circuit with three bulbs shows a total measured voltage of 6V, while the sum of the individual voltages across the bulbs is only 5.1V, resulting in a discrepancy of 0.9V. Possible causes for this discrepancy include measurement errors, variations in bulb resistance, or issues with the connections in the circuit. Bulb B's lower voltage compared to bulbs A and C may indicate a difference in resistance or a faulty connection. It is important to ensure that a calibrated meter is used and that measurements are taken correctly across the appropriate points in the circuit. In a properly functioning series circuit, the total voltage should equal the sum of the individual voltages across each component.
Ry122
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I setup a series circuit with 3 bulbs and I measured the voltages across each one
The potential differences were
A: 1.75V
B:1.6V
C: 1.75V
The sum of these voltages was 5.1V
The voltage measured across all three bulbs was 6V.
What are some possible causes for this discrepancy of .9V?

Also can someone tell me why bulb B's voltage is different from bulb A and bulb C?
 
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Did you use a calibrated meter?
What type of connections are used in this circuit?
Did you measure from A-B, B-C, C-D, and A-D where A,B,C,D represent specific points in the circuit?
Why shouldn't there be a difference of Voltage?
 

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