Fundamental electrokinetics problem calculation using Ohm's Law

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SUMMARY

The discussion focuses on calculating the voltage drop and terminal voltage in a circuit involving a consumer with a resistance of 2 ohms, an internal resistance of 0.3 ohms, and a power source voltage of 130 V. The total resistance in the circuit is calculated using Ohm's Law, specifically the equation I=V/Rtotal, where Rtotal is the sum of the consumer's resistance and the internal resistance. The resistance of connecting threads, each 0.15 ohms, also contributes to the total resistance, impacting the voltage drop and terminal voltage calculations.

PREREQUISITES
  • Understanding of Ohm's Law (R=V/I)
  • Basic knowledge of electrical resistance and circuit components
  • Familiarity with series circuits and total resistance calculations
  • Ability to perform voltage drop calculations across resistors
NEXT STEPS
  • Calculate the total resistance in the circuit including connecting threads
  • Determine the current flow using the equation I=V/Rtotal
  • Calculate the voltage drop across the internal resistance
  • Find the terminal voltage using the formula Vterminal = Vsource - Vdrop
USEFUL FOR

Students studying electrical engineering, educators teaching circuit analysis, and anyone involved in practical applications of Ohm's Law and circuit calculations.

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New poster has been reminded to show their work when posting schoolwork type questions
Homework Statement
Please help me to find the voltage drop of the wire, and the terminal voltage.
Relevant Equations
R=V/I (Ohm's law)
For a consumer with a resistance of 2 ohms, it has an internal resistance of 0.3 ohms and a voltage of 130 Vwe switch on the power source. The resistance of each connecting thread is 0.15 ohms. What is the voltage drop on the line and what is the terminal voltage?
 
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Please show your work and tell us where you're stuck.
 
I can find the current flow with the equation I=V/Rtotal,
where Rtotal=R1+R2 and R1=2 ohm
R2=0,3 ohm

but after this I do not know how to continue. Hence I thought to use the electrical resistance of the wire for solving the problem, but I can't figure out how to use it correctly.
I would appreciate some guidance.
 
annin said:
Homework Statement: Please help me to find the voltage drop of the wire, and the terminal voltage.
Relevant Equations: R=V/I (Ohm's law)

For a consumer with a resistance of 2 ohms, it has an internal resistance of 0.3 ohms and a voltage of 130 Vwe switch on the power source. The resistance of each connecting thread is 0.15 ohms. What is the voltage drop on the line and what is the terminal voltage?
annin said:
I can find the current flow with the equation I=V/Rtotal,
where Rtotal=R1+R2 and R1=2 ohm
R2=0,3 ohm

but after this I do not know how to continue. Hence I thought to use the electrical resistance of the wire for solving the problem, but I can't figure out how to use it correctly.
I would appreciate some guidance.
Is there a diagram that goes with this problem? I'm not understanding what is being asked. (Use the "Attach files" link below the Edit window to upload a diagram of the problem.)
 
annin said:
it has an internal resistance
"It" being a battery?
annin said:
I can find the current flow with the equation I=V/Rtotal,
where Rtotal=R1+R2 and R1=2 ohm
R2=0,3 ohm
What about these "connecting threads"? What are they and where are they in the circuit?
annin said:
What is the voltage drop on the line
What line? No line was mentioned before. Is it the "threads"?
annin said:
what is the terminal voltage?
Think of the battery with internal resistance as two parts, an ideal battery (no internal resistance) with a resistor in series. The voltage across the ideal battery is 130V. Given the current in the circuit, what is the voltage drop across the internal resistance?
 

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