When the voltage at the ends of the conductor is 9 V, the current in it is 6 A. What voltage must be created
| July 3, 2021 | education
When the voltage at the ends of the conductor is 9 V, the current in it is 6 A. What voltage must be created at the ends of the conductor so that the current in it is 4A?
Data: U0 (initial voltage at the ends of the conductor) = 9 V; I0 (initial current strength) = 6 A; I1 (current strength in question) = 4 A.
Since a given conductor has a constant resistance, then to calculate the created voltage, we use the equality: U0 / I0 = U1 / I1, whence U1 = U0 * I1 / I0.
Calculation: U1 = 9 * 4/6 = 6 V.
Answer: A voltage of 6 V must be created at the ends of the specified conductor.
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