Wednesday

April 16, 2014

April 16, 2014

Posted by **Priscilla** on Friday, February 12, 2010 at 10:06pm.

1. what is the equivalent resistance of the circuit?

R = RA + RB

R = 22-ohm + 33-ohm

R = 55-ohm

2. what is the current in the circuit?

I = Vsource/ RA + RB

I = 120/ 55 = 2.2 A

3. what is the voltage drop across each of resistor?

VA = IRA

= 48.4 V

VB = IRB

= 70.4 V

4. What is the voltage drop across the two resistors together?

i'm a little confused with this fourth question, thanks.

- Physics -
**Priscilla**, Friday, February 12, 2010 at 10:45pmIm just confused on number 4 only. Thanks. happy valentines everybody.

- Physics -
**drwls**, Saturday, February 13, 2010 at 3:25amThe voltage across "both together" is the sum of the separate voltage drops, which should be 120 V, the supply voltage.

Your Va and Vb are a bit off. They should be and 48 and 72 V. Part of the error may have been in rounding off the current to 2.2 A, but there are some multiplication errors as well.

- Physics -
**Priscilla**, Saturday, February 13, 2010 at 3:30pmOk, thanks a lot!! i really appreciate this, hope you have a good weekend

**Related Questions**

College physics - Find the following potential differences. The magnitude of the...

physics - A 18.7 ohm and a 24.3 ohm resistor are connected parallel. A ...

physics. - resistors of 30 ohms and 60 ohms are connected in parallel and joined...

Physics Resistance - A 65 V. battery is connected across a 65400 ohm and a 37700...

College physics - Find the following currents. The current I_1 through the ...

physics - A 16.0 ohm and a 24.0 ohm resistor are connected in parallel. A ...

physics - A 16.0 ohm and a 24.0 ohm resistor are connected in parallel. A ...

physics - resistors of 30 ohms and 60 ohms are connected in parallel and joined...

physics - resistors of 30 ohms and 60 ohms are connected in parallel and joined...

physics - A 350-ohm resistor is connected in series with a 270-ohm resistor. ...