Question

два резистора сопротивлением 10 и 20 Ом соединены последовательно, и на них подано напряжение 12В. определите силу тока в цепи и напряжение на каждом резисторе.

Answer 1

Решение во вложении:

Answer 2

Calculation of Current and Voltage in the Circuit

To determine the current and voltage in the circuit, we need to apply Ohm's Law and the rules for series circuits.

Ohm's Law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance.

In a series circuit, the total resistance is the sum of the individual resistances.

Given: - Resistance of the first resistor (R1) = 10 Ω - Resistance of the second resistor (R2) = 20 Ω - Applied voltage (V) = 12 V

Calculating the Total Resistance (R_total)

In a series circuit, the total resistance (R_total) is the sum of the individual resistances.

R_total = R1 + R2

Substituting the given values: R_total = 10 Ω + 20 Ω = 30 Ω

Calculating the Current (I)

Using Ohm's Law, we can calculate the current flowing through the circuit.

I = V / R_total

Substituting the given values: I = 12 V / 30 Ω = 0.4 A

The current flowing through the circuit is 0.4 A.

Calculating the Voltage across Each Resistor

In a series circuit, the voltage across each resistor is the same as the applied voltage.

The voltage across each resistor is 12 V.

Therefore, the current in the circuit is 0.4 A, and the voltage across each resistor is 12 V.