Thursday

July 31, 2014

July 31, 2014

Posted by **Rony** on Thursday, February 18, 2010 at 12:56pm.

-What is the total resistance of the load?

-What is the current in R3

-What is the potential difference across R2?

- physics -
**drwls**, Thursday, February 18, 2010 at 1:09pmFirst get the effective resistance of R1 and R2 in series. It is 24 ohms. That in parallel with 8 ohms has an overall circuit resistance Reff geiven by

1/Reff = 1/24 + 1/8 = 4/24 = 1/6

Therefore Reff = 6 ohms.

The total current going through the circuit (battery) is

I = V/Reff = 1.0 amperes.

The total current going through the R1 and R2 is V/(R1+R2) = 6/24 = 0.25 A

The potential drop across R2 is

0.25A*9 ohms = 2.25 V

**Related Questions**

Algebra 2 - two resistors are connected in parallel. Their resistances are 8 ...

Algebra 2 - two resistors are connected in parallel. Their resistances are 6 ...

physics - A 15.0 Ohms resistor is connected in series to a 120V generator and ...

PHY [non-calc] - Resistors R1= 10ohms, R2= 40 ohms and R3= 70 ohms are connected...

Physics (URGENT) - Three wire-wound resistors have the following values: 30 ohms...

Physics - I'm totally confused and this is due Monday- We're dealing with ...

physics, please help! - (a) Find the current in each resistor of the circuit ...

Physics - Circuits - Theres a circuit wired in series that has 4 resistors. 1) ...

Physics - Consider the LR circuit. We have R1=9 Ohms, R2=5 Ohms, R3=19 Ohms, V=2...

Physics - Consider the LR circuit. We have R1=19 Ohms, R2=23 Ohms, R3=23 Ohms, V...