Voltate, Resistance of open circuit

Click For Summary
SUMMARY

The discussion centers on the concept of voltage and resistance in an open circuit configuration involving a 10-ohm resistor and a 10V voltage source. It is established that the voltage between points A and B remains 10V because the resistor does not influence the voltage in an open circuit scenario. The key takeaway is that a current must flow through the resistor to create a voltage drop, as defined by Ohm's Law (V=IR). In an open circuit, there is no current, hence no voltage drop across the resistor.

PREREQUISITES
  • Understanding of Ohm's Law (V=IR)
  • Basic knowledge of electrical circuits
  • Familiarity with voltage sources and resistors
  • Concept of open and closed circuits
NEXT STEPS
  • Study the principles of current flow in electrical circuits
  • Learn about closed circuit configurations and their impact on voltage
  • Explore the concept of voltage drops across resistors in series circuits
  • Investigate the effects of different resistor values on current and voltage in closed circuits
USEFUL FOR

Students of electrical engineering, educators teaching circuit theory, and hobbyists interested in understanding basic electrical concepts.

yuno96
Messages
1
Reaction score
0
There is a open circuit like below figure

A---------R(10ohm)--------V(10V)-------------B

The Voltage between A and B is 10V. The resister do not affect in this circuit. This is what I have learned.

But I do not understand why the resistance do not affect to the voltage value. Please explain the reason in detail.
 
Engineering news on Phys.org
Before you can get a voltage drop across a resistance (R), you need to have a current (I) through the resistor. I.e. from ohms law, V=IR. So you would need to connect point A to B in order to get a current through the loop.
 

Similar threads

Basic question about RLC circuits
  • · Replies 32 ·
2
Replies
32
Views
4K
Need help in understanding these circuits
  • · Replies 2 ·
Replies
2
Views
2K
Obtaining the series and shunt resistance of a photodiode from the datasheet
  • · Replies 3 ·
Replies
3
Views
3K
Closed vs Open Electrical Circuits
  • · Replies 14 ·
Replies
14
Views
4K
Determine the output impedance of the circuit
  • · Replies 25 ·
Replies
25
Views
4K
Phasor diagrams for RLC circuit and resonant frequency
  • · Replies 3 ·
Replies
3
Views
5K
Circuit equivalent for fitting my data
  • · Replies 2 ·
Replies
2
Views
1K
Relay Control of Induction Motors
  • · Replies 5 ·
Replies
5
Views
2K
Query about single-ended LED tubes
  • · Replies 10 ·
Replies
10
Views
2K
Calculating the resistance in a compensating circuit for a thermocouple
  • · Replies 8 ·
Replies
8
Views
3K