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andreyandreev [35.5K]
4 years ago
9

Technician A says that Ohm's law can be used to determine circuit current flow if total circuit resistance and total voltage are

known. Technician B says that Ohm's law can be used to calculate the unknown resistance of a load in a circuit if total current and source voltage are known. Which technician is correct?
Physics
1 answer:
aleksklad [387]4 years ago
5 0

Answer:

Both technician are correct.

Explanation:

Remember that Ohm's Law its a relationship between Voltage (E), Current (I) and Resistance (R) in an electrical circuit. This relationship is defined by the following equation:

V=IR

In Ohm's Law you have 3 variables (V,I,R) and 1 equation. It means that you need to know 2 variables (Whatever 2 variables) to know the third.

Technician A says, in other words, that could calculate the Circuit current flow (I) knowing total circuit resistance (R) and total voltage (E). Note that Technician A knows 2 to 3 variables, then it's possible to use Ohm's Law with the following equation:

I= \frac{V}{R}

Technician B says, in other words, that could determine the unknown resistance (R) knowing total current (I) and source voltage (E). Once again, note that Technician B knows 2 to 3 variables, then it's possible to use Ohm's Law with the following equation:

R=\frac{V}{I}

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Answer:

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But the y direction, the electric field changes according to 210y from y = 0 to y = 0.50 m.

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