Question

По нити накала электрической лампы ежеминутно протекает 30 Кл электричества. Определите сопротивление нити лампы, если она включена в сеть напряжением 220В.

Answer 1

Для начала найдём силу тока по формуле  I=q/t=30/60сек(1минута)=0,5А

 

Теперь найдёшь сопротивление по формуле R=U/I=220/0,5=440 Ом) 

q= 30 Кл (заряд)

t= 60 с (время)

U = 220 В (напряжение)

I = q/t = 0.5 А (сила тока)

R = U/I = 440 Ом (сопротивление)

Answer 2

Calculation of Resistance of the Lamp Filament

To determine the resistance of the lamp filament, we can use Ohm's Law, which states that the resistance (R) of a conductor is equal to the voltage (V) across it divided by the current (I) flowing through it. Mathematically, this can be expressed as:

R = V / I

Given that the lamp is connected to a voltage of 220V and the current flowing through it is 30A, we can substitute these values into the equation to calculate the resistance.

R = 220V / 30A

Using a calculator, we can find that the resistance of the lamp filament is approximately 7.33 ohms.

Therefore, the resistance of the lamp filament is approximately 7.33 ohms.