What is the input power supply of the given circuit?

by drishyajose
January 20, 2018

Can you flip V1 so as to make the circuit more legible, please? As drawn R1 could be either 25 or 125 ohms. Also it would be helpful if you could reproduce the entire question as set. Thank you. mike

by mikerogerswsm
January 25, 2018
Add comment...

Please sign in or create an account to comment.


1 Answer

Answer by cyborgdale

Not enough information. We can ONLY express the voltage in terms of current and resistance. Since the TOTAL resistance is 200 ohms, then the applied voltage, V-total, is (current x 200) and the voltage drop at resistor R1 would be (0.625 x V-total), which is also equal to (current x 125), since this is a series circuit.

+1 vote
by cyborgdale
January 21, 2018

thankyou for answering my query:)

by drishyajose
January 22, 2018
Add comment...

Please sign in or create an account to comment.


Your Answer

You must log in or create an account (free!) to answer a question.

Log in Create an account


Go Ad-Free. Activate your CircuitLab membership. No more ads. Save unlimited circuits. Run unlimited simulations.

Search Questions & Answers


Ask a Question

Anyone can ask a question.

Did you already search (see above) to see if a similar question has already been answered? If you can't find the answer, you may ask a question.


About This Site

CircuitLab's Q&A site is a FREE questions and answers forum for electronics and electrical engineering students, hobbyists, and professionals.

We encourage you to use our built-in schematic & simulation software to add more detail to your questions and answers.

Acceptable Questions:

  • Concept or theory questions
  • Practical engineering questions
  • “Homework” questions
  • Software/hardware intersection
  • Best practices
  • Design choices & component selection
  • Troubleshooting

Unacceptable Questions:

  • Non-English language content
  • Non-question discussion
  • Non-electronics questions
  • Vendor-specific topics
  • Pure software questions
  • CircuitLab software support

Please respect that there are both seasoned experts and total newbies here: please be nice, be constructive, and be specific!

About CircuitLab

CircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.