Question

I=5 A, R1=2 Ом, R2=4 Ом, R3=R4=R5=3 Ом, U-? А

Answer 1

Ответ:

U=6A

КАК БЛИН СЛОЖНО У ВАС ЕЛИ СПРАВИЛАСЬ

Answer 2

To find the voltage (U) across the circuit, we can use Ohm's law, which states that voltage (V) is equal to the current (I) multiplied by the resistance (R):

V = I * R

Let's calculate the total resistance (R_total) first, and then we can find the voltage (U) across the circuit.

The resistors R1, R2, R3, R4, and R5 are connected in parallel. The formula for calculating the total resistance (R_total) for resistors connected in parallel is:

1/R_total = 1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5

Let's plug in the values:

1/R_total = 1/2 + 1/4 + 1/3 + 1/3 + 1/3

Now, find the sum of the fractions:

1/R_total = (6 + 3 + 4 + 4 + 4) / 12

1/R_total = 21 / 12

Now, take the reciprocal of both sides to find R_total:

R_total = 12 / 21

R_total = 4/7 Ω

Now that we have the total resistance, we can find the voltage (U) using Ohm's law:

U = I * R_total

Plugging in the values:

U = 5 A * (4/7 Ω)

U = 20/7 V ≈ 2.86 V

So, the voltage (U) across the circuit is approximately 2.86 Amperes.