Sunday
December 21, 2014

Homework Help: Physics-Please help

Posted by Lynn on Saturday, February 5, 2011 at 11:05am.

R1= 10 ohm
R2= 20 ohm
R3= 50 ohm
R4= ???

R1, R2, R3 and R4 are connected in parallel across a 120 V "power" supply to generate a current of 21 Amps. The value of R4 is most nearly _____ ohms.

0, 5, 10, 16, 100, 200, 300

I think 5 ohms, but I'm not sure...In need of some assistance, please

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physics (please check) - A total resistance of 3 ohms is to be producd by ...
Physics - A 22-ohm resistor and a 33-ohm resistor are connected in series and ...
physics - This is going to be hard to explain, but here goes! Four resistors, R1...
physics - the table below shows the values of the resistance, capcitive ...
Physics - Please check my answers: The voltage across a 10-ohm resistor carrying...
electrical circuit instrumentation - two resistor 6 ohm and 8 ohm are connected ...
physics - a 100 V DC signal is applied to four resistors as shown in Fig. 5. The...
please check (physics) - Current flows out of a 110V source through a 10 ohm ...
physics - A 18.7 ohm and a 24.3 ohm resistor are connected parallel. A ...
physics - A series RCL contains 150 ohm resistor, a 1.75x10^-6F capcitor and ...

Search
Members