0
How can I describe how current varies with voltage in wires resistors metal filament lamps and diodes?
If it's DC voltage, the relationship between current, resistance and voltage is defined by Ohm's Law.
V = I / R
A little manipulation shows that I = V * R. If The voltage and/or resistance varies with time, an easy way to describe it would be thus:
I(t) = V(t) * R(t)
Where I(t), V(t) and R(t) are all functions of time.
What else can I help you with?
Describe the relationship between voltage and current for the resistors?
R = V/I Therfore the resistance is proportional to the voltage and inversely proportional to the current.
What is x-ray tube voltage?
X-Ray voltage means voltage which is applied across anode & cathode, this is of very high voltage (in KV). This causes a high electric field for the moving of electrons emitted from cathode to anode. One more voltage wrt X-ray tube is filament voltage. Filament voltage with some appropriate current is applied to filament for the emitting of electrons. This current is proportional to the intensity of X-ray radiation generated from the tube. More current through the filament causes permanent damage of filament.
How are the plus and minus voltage signs determined for resistors?
Resistors have no polarity. The voltage across a resistor is determined by the direction of current flowing through that resistor (and vice versa).
What happen to the voltage across each resistor when all of the resistors are doubled?
Nothing. But the current is halved.
In a circuit the voltage across all resistores is the same?
It depends upon the connection of the resistors, if the resistors are connected in parallel then the voltage is same where as in case of resistors connected in series the voltage is different across different resistors.
Do resistors resist voltage or current?
Resistors resist the flow of current in a circuit, not the voltage.
Does the resistors current changes if the voltage across a fixed resistors is cut in half?
If the voltage across a resistor or resistors is halved, then the resulting current will also fall by half.
Do resistors limit current or voltage in an electrical circuit?
Resistors limit the flow of current in an electrical circuit.
Do resistors reduce current or voltage in an electrical circuit?
Resistors reduce the flow of current in an electrical circuit, which in turn affects the voltage across the circuit.
Advantage of using connecting resistors series in terms of current and voltage?
if resistors connected in series the resistance will increase.Then it limit the flow of current through it. voltage may be increased. A: by connecting any resistors in series it will limit the current flow it will effect the current but never the voltage applied
What does resistro do?
resistors is a most common electronic component and is used to control the voltage and current in a electronic circuit. resistors is inversely proportional to amount of power supplied,given by (power= voltage *current).
How do resistors lower voltage in an electrical circuit?
Resistors lower voltage in an electrical circuit by impeding the flow of electric current, which causes a drop in voltage across the resistor. This drop in voltage helps regulate the overall voltage in the circuit and control the amount of current flowing through it.
Describe the relationship between voltage and current for the resistors?
R = V/I Therfore the resistance is proportional to the voltage and inversely proportional to the current.
What is x-ray tube voltage?
X-Ray voltage means voltage which is applied across anode & cathode, this is of very high voltage (in KV). This causes a high electric field for the moving of electrons emitted from cathode to anode. One more voltage wrt X-ray tube is filament voltage. Filament voltage with some appropriate current is applied to filament for the emitting of electrons. This current is proportional to the intensity of X-ray radiation generated from the tube. More current through the filament causes permanent damage of filament.
Where are resistors placed to control voltage and current?
A: A RESISTOR is a passive component it cannot control voltage these components and/or current it can however limit
Why does a filament lamp get hot when you use high voltage?
because there is a correlation between resistance and voltage and current. The equation resistance = voltage divided by current shows that the higher the voltage, the bigger the resistance,, and the bigger the resistance the hotter the filament lamp will get because of the electrons bumping into each other which means there is a loss of energy and that energy is being transferred to the filament making the actual filament bulb hot since there is more thermal energy wasted at the end.
How are the plus and minus voltage signs determined for resistors?
Resistors have no polarity. The voltage across a resistor is determined by the direction of current flowing through that resistor (and vice versa).
