Which resistors in the circuit must always have the same current?

Which resistors in the circuit must always have the same current?

Answer Expert Verified The correct answer is D): resistors B and C. In the circuit in the figure, the resistors B and C are connected to the same points of the circuit (they are connected in parallel), therefore they have the same voltage, so they have the same energy per unit charge.

Is current a constant?

Current remains constant in series connection and voltage remains constant in parallel connection , current is like water flowing in rivers it always flow in specific path and with constant amount but when some diversion is created it distribute and amount decrease gradually same here with current.

What is constant current mode?

Constant current mode is essentially the opposite of constant voltage mode. In constant current mode, also known as current-controlled mode, the power supply behaves like a current source, holding the current flowing through the output terminals constant while the output voltage varies depending on load conditions.

What is constant current used for?

Constant current drivers are designed for LEDs that require a fixed output current and a range of voltages. Constant current drivers usually list their specifications on the device, with only one output current rating and a range of voltages that vary based on the wattage of the LED.

Do leds need constant voltage?

Constant voltage drivers used in LED lighting applications mainly usually have an output voltage of 12V or 24V DC. The main type of LED lighting that uses constant voltage is LED strip but some LED lamps and LED downlights also require constant voltage so it is important to check.

What is difference between constant current and constant voltage?

Constant voltage luminaires require a steady voltage to be supplied from the driver eg 12 or 24 Volts. For these lights the voltage is fixed by the driver but the current may vary. Constant current luminaires require a constant current to be supplied from the driver eg 350mA or 700mA (milli-amps).

How do you maintain a constant current?

Keep increasing the controls until the current is where you want it. Now substitute your load with the longest wires in place of the short circuit. You will need to increase the voltage until the current is where you want it, but don’t touch the current control – it is already set at your desired limit.

What does constant voltage mean?

Constant voltage refers to the ability to fluctuate output current to maintain a set voltage. Constant voltage can be used for applications where the workpieces do not have flat surfaces, e.g. crossed wires, and where the resistance varies significantly, and for extremely short welds (less than 1 millisecond).

What is CC and CV in welding?

Direct-current (DC) power supplies can be constant-voltage (CV) or constant-current (CC). CV equipment, typically used for semiautomatic and wire-fed processes like gas metal arc welding (GMAW) or flux-cored arc welding (FCAW), provides a consistent preset voltage. By increasing current, you increase penetration.

What is CC and CV in power supply?

“CV” stands for “constant voltage”, and “CC” stands for “constant current”. Most types of load need constant voltage to operate, so if the “CV” LED is lit, it means the PSU works fine with your load. The PSU has a physical limit on how much current it can supply. This mode is called “constant current”.