Question

При определении сопротивления резистора ученик измерил напряжение на нем очень точным вольтметром: U = 6,000 В. Сила тока через резистор равна I = (1,50 ± 0,07) А. В результате этих измерений можно сделать вывод, что сопротивление резистора, скорей всего

Answer 1

R=U/ I=6,000/ 1,50=4А

Answer 2

Determining the Resistance of a Resistor

To determine the resistance of a resistor, the student measured the voltage across it using a highly accurate voltmeter, which showed U = 6,000 V. The current through the resistor was measured to be I = (1.50 ± 0.07) A. Based on these measurements, we can make a conclusion about the resistance of the resistor.

According to Ohm's law, the resistance (R) of a resistor can be calculated by dividing the voltage (U) across the resistor by the current (I) flowing through it. Mathematically, this can be expressed as:

R = U / I.

Substituting the given values, we have:

R = 6,000 V / (1.50 A) = 4,000 Ω.

Therefore, the resistance of the resistor is most likely 4,000 Ω.

Please note that the uncertainty in the current measurement, indicated as ± 0.07 A, does not affect the calculation of the resistance since it is not involved in the division.