When the voltage across the resistor is 110 V, the current in it is 4A.
| June 19, 2021 | education
When the voltage across the resistor is 110 V, the current in it is 4A. What voltage should be applied to the resistor so that the current in it becomes 8A
Initial data: U1 (initial voltage across the resistor) = 110 V; I1 (initial amperage) = 4 A; I (steady-state current in the resistor) = 8 A.
Since the resistance of the resistor is constant, the voltage that should be applied to the resistor is determined from the equality: R = U1 / I1 = U2 / I2, whence U2 = U1 * I2 / I1 = 110 * 8/4 = 220 V.
Answer: A voltage of 220 V should be applied to the resistor.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
