Two devices with resistance R1 = 10 ohm and R2 = 40 ohm are connected in series in the circuit.
| March 12, 2021 | education
Two devices with resistance R1 = 10 ohm and R2 = 40 ohm are connected in series in the circuit. The voltage on the first of them is 3V. What is the voltage on the second fixture?
With a serial connection, the current in the devices will be the same: I = I1 = I2.
I = U1 / R1, where U1 is the voltage on the first device (U1 = 3 V), R1 is the resistance of the first device (R1 = 10 Ohm).
I = U1 / R1 = 3/10 = 0.3 A.
Voltage on the second device:
U2 = I * R2, where R1 is the resistance of the second device (R2 = 40 Ohm).
U2 = I * R2 = 0.3 * 40 = 12V.
Answer: The voltage on the second device is 12 V.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
