A student constructed a series circuit consisting of a 12.0volt battery, a 10.0ohm lamp, and a resistor. The circuit does not contain a voltmeter or an ammete
Physics
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Question
A student constructed a series circuit consisting of a 12.0volt battery, a 10.0ohm lamp, and a
resistor. The circuit does not contain a voltmeter or an ammeter. When the circuit is operating, the
total current through the circuit is 0.50 ampere.
Determine the equivalent resistance of the circuit.
resistor. The circuit does not contain a voltmeter or an ammeter. When the circuit is operating, the
total current through the circuit is 0.50 ampere.
Determine the equivalent resistance of the circuit.
1 Answer

1. User Answers Anonym
Considering the unknown resistence as R and using the Ohm's First Law, we have:
[tex]i= \frac{V}{R_{eq}} \\ 0.5= \frac{12}{R+10} \\ R+10=24 \\ R=14Ohm[/tex]
The equivalent resistence is given by the resistor series with the lamp resistence.
[tex]R_{eq}=R+10 \\ R_{eq}=14+10 \\ \boxed {R_{eq}=24Ohm}[/tex]
If you notice any mistake in my english, please let me know, because i am not native.