Question

Какое количество теплоты в резисторе сопротивлением 25 ом при протекании по нему тока силой 1.2 А за 1.5 минут

Answer 1

Q = I² R * t

I - сила тока ( 1,2 А )
R - сопротивление ( 25 Ом )
t - время ( 1,5 мин = 90 с )

Q = 1,2² * 25 * 90 = 1,44 * 25 * 90 = 3240 Дж

Answer 2

Calculating Heat in a Resistor

To calculate the amount of heat generated in a resistor, we can use the formula:

Q = I^2 * R * t

Where: - Q = heat generated (in joules) - I = current (in amperes) - R = resistance (in ohms) - t = time (in seconds)

Given: - I = 1.2 A - R = 25 ohms - t = 1.5 minutes = 90 seconds

Plugging these values into the formula: Q = (1.2 A)^2 * 25 ohms * 90 s

Calculating: Q = 1.44 * 25 * 90 Q = 3240 joules

So, the amount of heat generated in the resistor with a resistance of 25 ohms, when a current of 1.2 A flows through it for 1.5 minutes, is 3240 joules.