Posted by maryanne on Monday, May 24, 2010 at 5:52pm.
There is a formula you can use, but instead, do this:
assume 150 volts>
Current in 10 ohm resistor= 15a
current in 15 ohm reistor= 10 a
Net resistance= V/I= 150/25=6 ohms
and of course, you can do it the geek way:
1/Rtotal= 1/10 + 1/15
1/Rtotal= (15+10)/150= 1/6
Rtotal= 6 ohms.
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