Question

К источнику ЭДС 16В с внутренним сопротивлением r = 2,5 Ом подключен нагреватель сопротивлением R=5,5 Ом. Мощность электронагревателя пожалуйста помогитеееееееее

Answer 1

I=E/R+r=16/5,5+2,5=2 A
P=I^2*R=4*5,5=22 Вт

Answer 2

Calculation of Power in the Circuit

To calculate the power of the electronic heater connected to a source with an electromotive force (EMF) of 16V and an internal resistance of 2.5Ω, we need to use Ohm's Law and the formula for power.

Ohm's Law states that the current (I) flowing through a circuit is equal to the voltage (V) divided by the total resistance (R). Mathematically, it can be expressed as:

I = V / R

In this case, the total resistance (R) is the sum of the internal resistance (r) and the resistance of the heater (R). So, the total resistance (R) is:

R = r + R

Substituting the given values, we have:

R = 2.5Ω + 5.5Ω = 8Ω

Now, we can calculate the current (I) flowing through the circuit using Ohm's Law:

I = V / R = 16V / 8Ω = 2A

The power (P) of the electronic heater can be calculated using the formula:

P = I^2 * R

Substituting the values we have:

P = (2A)^2 * 5.5Ω = 4A^2 * 5.5Ω = 22W

Therefore, the power of the electronic heater connected to the 16V source with an internal resistance of 2.5Ω and a heater resistance of 5.5Ω is 22W.