Asked by Nina
A simple circuit is made of a power source, a rheostat and an ohmic resistor. The potential difference across the resistor is initially 5.0 +/- 0.1 V. A good lab student measures the current across the resistor to be 1.65 +/- 5 mA.
a)If the student increases the voltage across the resistor to 9.0 +/- 0.1 V, around what value should the measurement of the current across the resistor be (include uncertainties)?
b)what was the purpose of the rheostat in the circuit?
a)If the student increases the voltage across the resistor to 9.0 +/- 0.1 V, around what value should the measurement of the current across the resistor be (include uncertainties)?
b)what was the purpose of the rheostat in the circuit?
Answers
Answered by
drwls
Are you sure the 1.65 +/- 5 mA is correct? That could be any value between 6.65 mA and -3.35 mA.
Did you mean 1.65 A +/- 5 mA ?
The rheostat in the circuit allows the current in the resistor to vary with a fixed-voltage power source (like a battery).
Did you mean 1.65 A +/- 5 mA ?
The rheostat in the circuit allows the current in the resistor to vary with a fixed-voltage power source (like a battery).
Answered by
Nina
The problem says 1.65 (plus on top and the minus sign below it) 5 mA
I think the plus and minus is the uncertainties.
How would you be going about it doing both values....
I have no idea how to solve it and what the outcome is?
I think the plus and minus is the uncertainties.
How would you be going about it doing both values....
I have no idea how to solve it and what the outcome is?
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.