Question

Самодельный электрический паяльник, при силе тока 500 мА,имеет мощности 60 Вт. на какое напряжение расчитан паяльник?

Answer 1

$P=I^2*R=I*I*R$

$U=I*R$

тогда

$P=U*I$

подставим, получим:

$60=500*10^{-3}*U\\ \\U=\frac{60}{0.5}=120V$

Ответ: напряжение - 120 вольт

Answer 2

Calculation of Voltage for Homemade Electric Soldering Iron

To calculate the voltage for a homemade electric soldering iron, we need to use the formula P = VI, where P is the power in watts, V is the voltage in volts, and I is the current in amperes.

In this case, we are given that the soldering iron has a power of 60 watts and a current of 500 mA (0.5 A). We can rearrange the formula to solve for V:

V = P / I

Substituting the given values:

V = 60 W / 0.5 A

V = 120 volts

Therefore, the homemade electric soldering iron is designed to operate at a voltage of 120 volts.