Question

В сеть с напряжением 220 В последовательно включены две лампы сопротивлением 200 ом каждая. Определить силу тока в каждой лампе

Answer 1

R=R1+R2=400 Ом
I=U/R=220/400=0,55 A

Answer 2

Calculating Current in Each Lamp

To determine the current flowing through each lamp in a series circuit with a voltage of 220V and two lamps with a resistance of 200 ohms each, we can use Ohm's law. Ohm's law states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) between them. The formula for Ohm's law is:

I = V / R

Where: - I = current in amperes (A) - V = voltage in volts (V) - R = resistance in ohms (Ω)

Using this formula, we can calculate the current flowing through each lamp.

Calculation

For each lamp, the resistance (R) is 200 ohms, and the voltage (V) is 220V.

Using Ohm's law, the current (I) flowing through each lamp can be calculated as follows:

I = V / R

For the first lamp: I1 = 220V / 200Ω = 1.1A

For the second lamp: I2 = 220V / 200Ω = 1.1A

Therefore, the current flowing through each lamp in the circuit is 1.1 amperes.