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October 23, 2014

Homework Help: Physics

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

A 22-ohm resistor and a 33-ohm resistor are connected in series and placed across 120-V potential difference.

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.

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