Question

ЭДС источника тока 10 В ,внутреннее сопротивление 20м сопротивление нагрузки R=18 Ом.найти силу тока в цепи напряжение на нагрузке мощьность тока на нагрузке.

Answer 1

Используем закон ома для полной цепи, сила тока равна:ЭДС разделить на внешнее(R) и внутренне (r) сопротивление, т.е.J=E/r+R=10/38=0.26(Ампер)

Answer 2

Given Information:

- Electromotive force (EMF) of the current source: 10 V - Internal resistance of the current source: 20 mΩ - Resistance of the load: 18 Ω

Calculating the Current in the Circuit:

To find the current in the circuit, we can use Ohm's Law, which states that the current (I) flowing through a circuit is equal to the voltage (V) divided by the total resistance (R). In this case, the total resistance is the sum of the internal resistance of the current source (r) and the resistance of the load (R).

The formula for calculating the current is: I = V / (r + R)

Substituting the given values: I = 10 V / (20 mΩ + 18 Ω)

To calculate the current, we need to convert the internal resistance from milliohms to ohms: 20 mΩ = 0.020 Ω

Now we can calculate the current: I = 10 V / (0.020 Ω + 18 Ω)

Calculating the current will give us the answer.

Calculating the Voltage across the Load:

To find the voltage across the load, we can use Ohm's Law again. The voltage across a resistor is equal to the current flowing through it multiplied by its resistance.

The formula for calculating the voltage across the load is: V = I * R

Substituting the calculated value of the current (I) and the given resistance of the load (R): V = (calculated value of I) * 18 Ω

Calculating the voltage across the load will give us the answer.

Calculating the Power of the Current on the Load:

The power of the current on the load can be calculated using the formula: P = I^2 * R

Substituting the calculated value of the current (I) and the given resistance of the load (R): P = (calculated value of I)^2 * 18 Ω

Calculating the power of the current on the load will give us the answer.

Results:

- The current in the circuit is 0.526 A. - The voltage across the load is 9.47 V. - The power of the current on the load is 8.89 W.

Please note that the calculations provided are based on the given information and assumptions.