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October 21, 2025, 04:08:28 pm
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Author Topic: Mr. Study's 3 and 4 Question.  (Read 19598 times)  Share 

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yawho

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Re: Mr. Study's 3 and 4 Question.
« Reply #90 on: May 27, 2012, 07:22:07 pm »
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Quote from: Mr. Study on May 27, 2012, 11:19:21 am
How exactly would I find the total voltage? Since the batteries are facing different directions, I have no idea how to find the direction of current.

Also, after we have find out the total voltage, we just basically take 1V off it and then use V/R.

Thank you very much and sorry if this is a 'noob' question but this is the only type of question that I haven't ecountered before.  :'(


You haven't ecountered before because no one will connect up such a circuit with the batteries pumping charges in opposite directions.
The net voltage supplied is 19 V forward biasing the silicon diode. resistor voltage = 18.3 V, current = 18.3/920 = 0.020A = 20 mA
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