ac supply
is given and then in the circuit rectifier converts ac to dc
For a d.c. circuit, you divide its supply voltage by the resistance of its load. For an a.c. circuit, you divide its supply voltage by the impedance of its load.
v=ir 12=i20 i = 0.6 Amp
dc supply is used for control circuit because dc current is an independent source .
Load current is simply the name given to the current drawn by a load from its supply. In the case of a d.c. circuit, this is determined by dividing the supply voltage by the resistance of the load; in the case of an a.c. circuit, it is determined by dividing the supply voltage by the impedance of the load.
The equation for such circuits is given by: V=R*I +(1/C)*Integration(idt)
A voltage supply is needed to operate a circuit.
a meter uses its own supply to measure resistance. you dont have to remove the resistor from the circuit but you must isolate it from the circuit supply to get an accurate reading.
If additional resistance is connected in parallel with a circuit the supply voltage will decrease?
The supply voltage in a parallel circuit remains the same regardless of the number of additional resistors connected. The voltage across each resistor in a parallel circuit is the same as the supply voltage. Adding more resistors in parallel will increase the total current drawn from the supply.
Energy = (Capacitance*(Voltage)^2)/2. Three capacitors are there. Are they in series or in parallel. It is not mentioned. So friend has given only the formula as guidelines.
is an embedded circuit or stand alone unit the function of which is to supply a stable voltage to a circuit or device that must be operated within certain power supply limits .
That would depend on the power supply.