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What is the relationship between current, voltage, and resistance in an electrical circuit?
In an electrical circuit, current is the flow of electric charge, voltage is the force that drives the current, and resistance is the opposition to the flow of current. According to Ohm's Law, the relationship between current (I), voltage (V), and resistance (R) is given by the equation V I R, where voltage equals current multiplied by resistance.
What is the current through a wire that has a resistance of 30 ohms if the voltage is 90 volts?
The current through the wire can be calculated using Ohm's Law, which states that current (I) equals voltage (V) divided by resistance (R). In this case, the current would be 90 volts divided by 30 ohms, which equals 3 amperes.
How are current, voltage, and resistance related in an electrical circuit?
In an electrical circuit, current is directly proportional to voltage and inversely proportional to resistance. This relationship is described by Ohm's Law, which states that current (I) equals voltage (V) divided by resistance (R), or I V/R.
How calculate unknown resistance?
-- Connect a source of known, small voltage across the ends of the unknown resistance. -- Measure the resulting current through the unknown resistance. -- Divide (small known voltage)/(measured current). The quotient is the formerly unknown resistance.
What is the resistance when a bulb has a current of 5 amps and a voltage of 12 volts?
The resistance can be calculated using Ohm's Law, which states that resistance (R) equals voltage (V) divided by current (I). In this case, R = 12V / 5A = 2.4 ohms.
If voltage equals resistance x current then?
Ohm's Law: Voltage equals Resistance times Current Given any two, you can figure out the other using simple algebra.
What does e equals ir stand for?
E=IR is Ohm's Law. Electromotive Force equals current times resistance. It is the fundamental equation of electronicalism.
How do you calculate power loss from a resistor?
The power dissipated across a resistor, or any device for that matter, is watts, or voltage times current. If you don't know one of voltage or current, you can calculate it from Ohm's law: voltage equals resistance times current. So; if you know voltage and current, power is voltage times current; if you know voltage and resistance, watts is voltage squared divided by resistance; and if you know current and resistance, watts is current squared times resistance.
How is current related to resistance in a circuit?
Ohm's law: voltage is current times resistance. Restating this; current is voltage divided by resistance, so increasing resistance would decrease current.
An electric heating element has a resistance of 16ohm and is connected to a voltage of 120v How much current will flow in the circuit?
Ohms law states that E=I * R, or voltage equals current times resistance. Therefore current equals voltage divided by resistance. 120v divided by 16 ohms equals 7.5 amps.
What does l represent in electrical?
It usually represents current in amps as in the equation V=IR (volts equals current times resistance)
What is the voltage across a load given that the current though it equals 30mA and resistance of the load is 1000 ohms?
Ohm's law: voltage is current times resistance 0.03 amperes times 1000 ohms = 30 volts.
What is the voltage drop of a 1k ohm resistor?
It depends on the current going through it. Ohm's law: Voltage equals current times resistance.
What happen to the current in a circuit if the resistance is increased?
If resistance is increased, current decreases. Ohm's Law: current equals voltage divided by resistance.
What happens to the current in a circuit if the resistance is increase?
If resistance is increased, current decreases. Ohm's Law: current equals voltage divided by resistance.
What happens to the current in the circuit if the resistance is increased?
If resistance is increased, current decreases. Ohm's Law: current equals voltage divided by resistance.
What votage will cause an 8 amp current to flow through a 24 ohm resister?
Ohm's law: Voltage equals current times resistance. 8 amperes times 24 ohms equals 192 volts.
