Posted by **charlie** on Monday, February 23, 2009 at 11:30am.

In a 9V circuit, all the resistors are 20 or 40 kilo Ohms.

Convention says that calcs should therefore be quoted to 1 sig fig, since the volts are the least accuracy.

2 seems better though. Any ideas?

- Math/Physics -
**drwls**, Monday, February 23, 2009 at 12:21pm
Carrying an extra sig. fig. is always a good idea, since the first significant digit of whatever you are computing (such as current in this case) may be a low one like 1 or 2.

1 +/- 0.5 is precision, but 9 +/- 0.5 is 0.55% precision.

## Answer this Question

## Related Questions

- Sig Figs - In a 9V circuit, all the resistors are 20 or 40 kilo Ohms. Convention...
- Physics - Thanks for any help :) Four 20 ohm resistors are connected in parallel...
- physics - Please check my work here: Resistors of 30 ohms and 60 ohms are ...
- physics - Four 20 ohm resistors are connected in series and the combination is ...
- physics - In the circuit shown, find the voltage Vx (in Volts) if V = 17.0 Volts...
- Physics - In the circuit shown, find the voltage Vx (in Volts) if V = 17.0 Volts...
- physics - need help - Resistors of 30 ohms and 60 ohms are connected in parallel...
- Physics (URGENT) - Three wire-wound resistors have the following values: 30 ohms...
- Engineering - Three resistors , 50 ohms, 100 ohms, and r3 are connected in a ...
- physics - A 15.0 Ohms resistor is connected in series to a 120V generator and ...

More Related Questions