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What is the resistance of a lamp operating at 115 volts and using 0.25 amperes of current?
The resistance of a lamp operating at 115 volts and using 0.25 amp of current is 460. The relationship I used is Ohm's law.
What else can I help you with?
What is the method for calculating amperes and current?
To calculate amperes, you can use Ohm's Law: amperes = voltage ÷ resistance. Current is the flow of electric charge, measured in amperes, that passes through a conductor in a unit of time. You can measure current using an ammeter in a circuit.
What is the resistance of a material thatvdraws 200ma of current at 20v?
Convert the current to amperes, then (using Ohm's Law), divide voltage by current.
What is current measured using?
amperes
How much current and circuit that includes a 9- volt battery and a bulb with a resistance of 3 ohms?
A resistance of 3 ohms connected between the terminals of a 9-volt battery will result in a current of 3 Amperes. If the battery is one of those little ones with snaps on top, it may be able to produce 3 amperes of current for about 3 seconds before it rolls over and totally dies.
What is the resistance of the heating element of an electric iron it the ampere draw is 8 amperes when 115 volts are applied?
Using Ohm's Law (E = I R) Voltage = Current x Resistance or switch around to get R = E / I: 115 volts / 8 Amperes = 14.375 Ohms The above is correct for DC current but is close enough to be used for AC current.
What is the current in a 100 volt circuit with 25 ohms of resistance?
Using Ohm's law V:IR .I:V/R..I:100/5-20...I-20ampere
What is the current when a 12 volt battery is connected through a resistance of 25 ohms?
The current flowing through the circuit can be calculated using Ohm's Law: I = V/R, where I is the current, V is the voltage (12 volts), and R is the resistance (25 ohms). Plugging in the values, the current would be 0.48 amperes.
What is the resistance of an electric lamp that takes in a current of 0.40 ampere when 110 volts is applied?
Ohm's Law: Resistance is voltage divided by current 110 volts divided by 0.4 amperes is 275 ohms.
What is the voltage of microwave with a resistance of 5 ohms and current flowing of 10 amperes?
It looks as if you can use Ohm's Law to calculate this: V=IR (voltage = current x 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.
What is the equation to calculate power when circuit current and resistance are known what is the equation?
The power ( P ) in an electrical circuit can be calculated using Ohm's Law, which relates voltage ( V ), current ( I ), and resistance ( R ). The equation is given by ( P = I^2 R ), where ( P ) is the power in watts, ( I ) is the current in amperes, and ( R ) is the resistance in ohms. This formula shows that power is directly proportional to the square of the current multiplied by the resistance.
How do you find amperes when using a resistor?
if you want to find the current (in amperes) through the resistor then connect a ammeter in series with the resistor.
