Question

Ёлочная гирлянда из 40 лампочек рассчитана на напряжение 220 в. Сопротивление каждой лампочки 11 Ом. Какова сила тока в гирлянде? Чему равно напряжение на зажимах каждой лампочки?

Answer 1

Ответ:

дано

U=220В

R=11 0м

найти

I-?

решение

I=U/R=220/11=20A

напряжение каждой лампочки:

220/40=5,5 В

Answer 2

Calculation of Current in the Garland

To calculate the current in the garland, we can use Ohm's Law, which states that the current flowing through a conductor is equal to the voltage across the conductor divided by its resistance. In this case, the voltage is 220 V and the resistance of each bulb is 11 Ω.

Using Ohm's Law, we can calculate the current as follows:

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

Substituting the given values:

Current (I) = 220 V / 11 Ω

Calculating the result:

Current (I) = 20 A

Therefore, the current flowing through the garland is 20 Amperes.

Voltage Across Each Bulb

To calculate the voltage across each bulb, we can use the concept of series circuits. In a series circuit, the total voltage is divided equally among the components connected in series.

In this case, the total voltage across the garland is 220 V. Since there are 40 bulbs in the garland, the voltage across each bulb will be:

Voltage across each bulb = Total voltage / Number of bulbs

Substituting the given values:

Voltage across each bulb = 220 V / 40 bulbs

Calculating the result:

Voltage across each bulb = 5.5 V

Therefore, the voltage across each bulb in the garland is 5.5 Volts.

Please let me know if there is anything else I can help you with!