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What is the amperage in an electric circuit when the voltage 120 volts and the resistance is 40 ohms?

Ohm's Law states Voltage = Current x Resistance. You rewrite the equation as Current = Volts / Resistance to solve for current.


What is common to both thevenin and norton theorem?

To solve any D.C. circuit by using Thevenin Theorem,First of all load resistance RL is disconnected from the circuit and open circuit voltage across the circuit is calculated (known as Thevenin equivalent voltage)Secondly, the battery is removed by leaving behind its internal resistance. Now we calculate equivqlent resistance of the circuit ( called Thevenin equivalent resistance).Now we connect Thevenin Voltage in series with Equivalent resistance of the circuit and now connect load resistance across this circuit to calculate current flowing through the load resistance.Whereas in the case of using Norton theorem, we again remove the load resistance if any, and then short circuit these open terminals and calculate short circuit current Isc.Second step is same as in Thevenin theorem i.e. remove all sources of emf by replacing their internal resistances and calculate equivqalent resistance of the circuit.Lastly, join short circuit current source in parallel with equivalent resistance of the circuit. Now, we can calculate votage across the resistance which was connected in parallel with Isc.So, by knowing the open circuit voltage, we can calculate current flowing the resistance and on the other hand , by knowing the short curcuit current , we can calculate voltage across the resistance.


When current remains constant and resistance increases the voltage in the circuit will?

The physical equation governing voltage is V = IR, where V is voltage, I is current, and R is resistance. If V remains constant while R is increased, I or current must decrease. Increasing the resistance in a circuit is simply introducing a material that further resists or impedes the electron flow (current), thus current decreases.


Why doesn't current decrease in series resistance circuit though resistance opposes current?

If you add another resistor or just increase the resistance the current will decrease. I think the statement you are talking about means that whatever the current is in the series circuit it will be the same everywhere in that circuit, on both sides of the resistance. The resistance lowers the current in the entire circuit, not just after the resistance.


Will voltage or current be higher in a circuit during short circuit?

Since a short circuit is, essentially, a zero impedance connection between nodes, the current in a short circuit is limited only by the ability of the source. In the case of an ideal voltage source connected to an ideal short circuit, you would have infinite amperes.

Related Questions

What is the equation for current flow?

The equation for current flow (I) in a circuit is given by Ohm's Law: I = V/R, where V is the voltage across the circuit and R is the resistance of the circuit. This equation states that the current flowing through a circuit is directly proportional to the voltage across it and inversely proportional to the resistance of the circuit.


What is the relationship between power dissipation (P), current (i), and resistance (r) in an electrical circuit, as represented by the equation Pi2r?

The relationship between power dissipation (P), current (i), and resistance (r) in an electrical circuit is represented by the equation Pi2r. This equation shows that power dissipation is directly proportional to the square of the current and the resistance in the circuit.


What is the relationship between power dissipation (P), current (i), and resistance (r) in an electrical circuit, as represented by the equation P i2r?

The relationship between power dissipation (P), current (i), and resistance (r) in an electrical circuit is represented by the equation P i2r. This equation shows that power dissipation is directly proportional to the square of the current and the resistance in the circuit.


How to calculate the current in a circuit?

To calculate the current in a circuit, you can use Ohm's Law, which states that current (I) equals voltage (V) divided by resistance (R). The formula is I V/R. Simply plug in the values for voltage and resistance to find the current flowing through the circuit.


The power in an electrical circuit is given by the equation P I2R where I is the current flowing through the circuit and R is the resistance of the circuit. What is the power in a circuit that has a c?

The power in a circuit is determined by multiplying the square of the current flowing through the circuit by the resistance of the circuit. Without specific values for current and resistance provided, the precise power cannot be calculated.


What is an equation for power?

Power = (energy used)/(time to use it)Power dissipated by an electrical circuit =(voltage across the circuit) x (current through the circuit)or(resistance of the circuit) x (square of the current through the circuit)or(square of the voltage across the circuit)/(resistance of the circuit)


What is the amperage in an electric circuit when the voltage 120 volts and the resistance is 40 ohms?

Ohm's Law states Voltage = Current x Resistance. You rewrite the equation as Current = Volts / Resistance to solve for current.


What is the relationship between voltage, current, and resistance in an electrical circuit?

In an electrical circuit, voltage is the force that pushes electric current through a conductor. Current is the flow of electric charge, and resistance is the opposition to the flow of current. According to Ohm's Law, the relationship between voltage (V), current (I), and resistance (R) is given by the equation V I R. This means that the voltage across a circuit is equal to the current flowing through it multiplied by the resistance of the circuit.


What is the relationship between voltage, current, and resistance in Ohm's Law?

Ohm's Law states that the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit is given by the equation V I R. This means that the voltage across a circuit is directly proportional to the current flowing through it and the resistance of the circuit.


How do you calculate the voltage in a circuit with a resistance of 20hms and a currents of 6?

Use Ohm's Law. In this case, multiply the resistance by the current.


How many amp in a 320v?

The current in amps (A) depends on the resistance in the circuit. Using Ohm's Law (I = V/R), you can calculate the current (I) by dividing the voltage (V) by the resistance (R). Without knowing the resistance in the circuit, we cannot determine the exact current at 320V.


What is the relationship among voltage circuit and resistance in a circuit?

Voltage = (current) x (resistance) Current = (voltage)/(resistance) Resistance = (voltage)/(current)