Question

Електричний паяльник підключений до Дэниела струму напругою 140В. Опір нагрівальго елементу паяльника в горячому стані дорівнює 150 Ом. Яка сила струму в нагрівальному елементі?​

Answer 1

Відповідь:

0,9 A

Пояснення:

I=U/R⇒140/150=0.9

Answer 2

Calculating Current in the Heating Element of the Soldering Iron

To calculate the current in the heating element of the soldering iron, we can use Ohm's Law, which 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 the circuit (in amperes, A) - V = voltage across the circuit (in volts, V) - R = resistance in the circuit (in ohms, Ω)

Applying Ohm's Law to the Given Values

In this scenario, the voltage (V) across the heating element of the soldering iron is 140V, and the resistance (R) of the heating element in the hot state is 150Ω.

Using Ohm's Law, we can calculate the current (I) in the heating element:

I = V / R

I = 140V / 150Ω

I ≈ 0.9333 A

Therefore, the current in the heating element of the soldering iron is approximately 0.9333 amperes when connected to a 140V power supply and with a resistance of 150Ω in the hot state.