In a parallel circuit, what is applied simultaneously across all devices?

In a parallel circuit, what is applied simultaneously across all devices?

• A. The same current output
• B. The same voltage output
• C. The same resistance
• D. The same power rating

Answer: (B)

In a parallel circuit, the same two nodes connect to every device, so the voltage across each device is identical. The same voltage is applied across all branches at the same time. This explains why each device shares the same driving force, while the current in each branch can differ according to its own resistance (I = V/R). So, even with the same voltage, devices with different resistances draw different currents, and their power consumption can differ as well (P = V^2/R). The other possibilities aren’t universal truths in parallel circuits: current isn’t necessarily the same in every branch, and neither resistance nor power rating is required to be identical across all devices.

In a parallel circuit, the same two nodes connect to every device, so the voltage across each device is identical. The same voltage is applied across all branches at the same time. This explains why each device shares the same driving force, while the current in each branch can differ according to its own resistance (I = V/R). So, even with the same voltage, devices with different resistances draw different currents, and their power consumption can differ as well (P = V^2/R). The other possibilities aren’t universal truths in parallel circuits: current isn’t necessarily the same in every branch, and neither resistance nor power rating is required to be identical across all devices.