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Current flow. It's also worthy of noting that a resistor doesn't limit-by, it limits-to, and the current is dependent on the voltage.
I[A] = U[V] / R[ohm]
It's also worth to note, that the power flowing through said resistor with resistance R is I[A] * U[V] for DC circuits - helps to remember this well when picking appropriately-rated resistors for replacement.
Example: let's say we have a 20-ohm, 2W resistor. If we place it in a circuit with 5V, we will get 5V / 20ohm = 250mA (0.25A) of current flowing through the resistor. The power the resistor will "see" is 250mA * 5V = 1.25W, so it's safe.
But let's now put that same resistor in a 12V circuit. The current flowing will be 12V / 20ohm = 600mA (0.6A), and the power will be 600mA * 12V = 7.2W, so the resistor will burn.
What else can I help you with?
What components are placed in an electrical circuit to control the amount of resistance in circuit?
resistors, variable potentiometers
The opposition to the flow of electrical current?
In a DC circuit . . . resistance. In an AC circuit . . . impedance.
What happens to an electrical circuit when there is unwanted resistance in it?
a common cause of this type problem is corrosion at a connector.
What is the Effect of collector resistance in emitter follower circuit?
Colector resistance in an emitter follower circuit serves to place a limit on how much current can be supplied by the transistor. Often, the resistor is sized so that a short circuit in the load does not cause the transistor to fail.
When you pull out the plug connected to an electrical appliance you often observe a spark to which property of the appliance is this related?
I think it is due to the resistance to the electrical appliance, the resistance offered by the electrical appliance works as a load in the circuit and when load is removed it causes sparking.
What are the units of resistance in an electrical circuit measured in?
The units of resistance in an electrical circuit are measured in ohms ().
What component in an electrical circuit provides resistance?
The component in an electrical circuit that provides resistance is called a resistor.
Do resistors limit current or voltage in an electrical circuit?
Resistors limit the flow of current in an electrical circuit.
The number of ohms in a circuit is a measure of the?
resistance to the flow of electrical current in the circuit. It is a measure of how much opposition the circuit presents to the flow of electricity. The higher the number of ohms, the greater the resistance in the circuit.
What is the formula for calculating the resistance in an electrical circuit?
The formula for calculating resistance in an electrical circuit is R V/I, where R is the resistance, V is the voltage, and I is the current.
What is the unit for measuring electrical resistance in a circuit?
The unit for measuring electrical resistance in a circuit is ohms, symbolized by the Greek letter omega ().
How to figure amps in an electrical circuit?
To figure out the amps in an electrical circuit, you can use Ohm's Law, which states that Amps Volts / Resistance. Measure the voltage across the circuit and the resistance of the components in the circuit, then divide the voltage by the resistance to calculate the amperage.
What is the formula for calculating the resistance of a capacitor in an electrical circuit?
The formula for calculating the resistance of a capacitor in an electrical circuit is R 1 / (2 f C), where R is the resistance, f is the frequency of the circuit, and C is the capacitance of the capacitor.
What is the significance of starting resistance in electrical circuits?
Starting resistance in electrical circuits is significant because it helps limit the initial flow of current when a circuit is turned on. This can prevent damage to components and ensure a smooth and controlled start-up process.
What causes electrical resistance in a circuit?
Electrical resistance in a circuit is caused by the collisions of electrons with atoms in the material through which the current is flowing. This collision results in the conversion of electrical energy into heat.
When they can use a resistor in a circuit?
When the circuit needs the electrical property of resistance, of course.
What causes a voltage drop in an electrical circuit?
A voltage drop in an electrical circuit is caused by resistance in the circuit components, such as wires, resistors, or other devices. This resistance reduces the flow of current and results in a decrease in voltage across the circuit.
