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a 120 ohm resistor, a 60 ohm resistor, and a 40 ohm resistor are connected in parallel to a 120 volt power source. what is the current running through the entire circuit?

Respuesta :

jelkhechen86
Answer:
[tex] \frac{1}{r \: total} = \frac{1}{120} + \frac{1}{60} + \frac{1}{40} \\ \frac{1}{r \: total} = \frac{1 + 2 + 3}{120} = \frac{6}{120} = \frac{1}{20} \\ r \: total = 20 \: ohms[/tex]
Knowing V=ri
then, 120=i×20 --> i=6 A
asuwafohjames

The current running through the entire circuit is 6A.

What is current?

Current is the rate of flow of electric charge around a conductor.

To calculate the current running through the entire circuit, we use the formula below.

Formula:

  • I = V/R'................ Equation 1

Where:

  • I = Current
  • V = Voltage
  • R' = Combined resistance of the resistors connected in parallel

From the question,

Given:

  • V = 120 V,
  • 1/R' = [(1/120)+(1/60)+(1/40)] (The resistors are connected in parallel)
  • 1/R' = (1+2+3)/120
  • 1/R' = 6/120
  • R' = 120/6
  • R' = 20 ohms.

Substitute these values into equation 1

  • I = 120/20
  • I = 6 A.

Hence, the current running through the entire circuit is 6A.

Learn more about current here: https://brainly.com/question/24858512

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