Question

Напряжение источника тока 200 в. В цепь включена электролампа. При подключении последовательно резистора сила тока уменьшилась от 20 до 8 А. Рассчитайте сопротивление резистора.​

Answer 1

Ответ:

15 ом

Объяснение:

u=i*r

r=u:i

200:20=10

200:8=25

25-10=15 ом

Answer 2

Calculation of the Resistance of the Resistor

To calculate the resistance of the resistor, we can use Ohm's Law, which states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance.

Given: - Voltage of the current source: 200 V - Initial current without the resistor: 20 A - Current with the resistor: 8 A

Using Ohm's Law, we can calculate the resistance of the resistor as follows:

Resistance (R) = Voltage (V) / Current (I)

Initial resistance without the resistor: R1 = 200 V / 20 A = 10 Ω

Resistance with the resistor: **R2 =