That would be any circuit that does not go off or on by the key.
Certain circuits, yes but not all of them.
What is considered "constant current"
these are essential for circuits which are current sensitive, it regulates the amount of current which serves as protection for circuits. it is commonly used in Laser diode applications.
it keeps constant power to the amp.
series circuits have 1 pathway they have constant current(Amperes) not constant voltage. Resistance=R+R+R+...
12V Constant = Constant power direct from battery. 12V Switched = Accessory power only when turned to the on/accessory position (example: car stereo only turns on when the car is running or in accessory position).
the ACC wire from the stereo is connected to constant power (+12V)
In DC, power equals voltage x current. In AC, power equals voltage x current x power factor. The power factor is an adimensional constant, and in common circuits it is often close to 1.
It depends where you live.In most countries, radial circuits are used for both power and lighting circuit.In the UK, ring-main circuits are used for power circuits, while radial circuits are used for lighting circuits.
the term voltage is constant in parallel circuits
Both take current and energy from the power supply and dissipate power.
Since the Emf(voltage) being supplied to circuit is constant then so is the current in series circuit.In parallel circuits the current is then divided depending on the resistors.but for both circuits the sum of the current in= current outAnswerIt's not necessarily 'constant', but it will be the samecurrent.