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In a home that has 120 v service heating is provided by electric resistance heat with an overall resistance of 40 ohms hom much heating power will the electric resistance heater generate?
The formula you are looking for is W = E(squared)/R, W = Voltage (squared) divided by Resistance.
How many amps will a 260 ohms resistor on a 120 volt circuit use?
Just use Ohm's Law Voltage = Current x Resistance Amps = Voltage Divided By Resistance Amps = 120 / 260
What is a resistance of the appliance If 24 amps of current flows through an appliance connected to a 120 v circuit.?
Let R be the resistance, V the voltage, and I the current R = V / I R = 120 / 24 R = 5 ohm
How much current is needed to light a bulb with 180 ohms of resistance using 120 volt power source?
V = I x R so current I = 1/2 amp. I bet the bulb is rated at 60 W because Watts = Current x Voltage. Where V = voltage (volt) I = current (ampere) R = resistance (ohm) Your question isn't easy to answer. A lamp has two 'resistances': a 'cold' resistance, and a 'hot' resistance. Before it is energised, it is cold, so its resistance is low; when it is energised, it becomes very hot, and its resistance increases significantly. So, the question is whether your '240 ohms' is the cold resistance or the hot resistance. If it is the cold resistance, then a current of 0.5 A will flow through it for a fraction of a second, then its resistance will increase significantly, and the current will fall to a very much smaller value.
How much power is consumed by a circuit wit 120v source that draws 18A through a resistance load?
Just get out your trusty calculator and multiply 120 times 18.
600 watts requires how many amps?
It depends on the voltage source. watts = voltage * voltage / resistance and amps = voltage / resistance example 1: To produce 600W from a 120V source, you need a resistor of size 120V*120V/600W = 24 Ohm. This would pull 120V/24 Ohm = 5 amps. example 2: To produce 600W from a 240V source, you need a resistor of size 240V*240V/600W = 96 Ohm. This would pull 240V/96 Ohm = 2.5 amps.
What is the resistance of a 120-W incandescent lamp connected to a 120-V power supply?
The resistance of the lamp can be calculated using the formula: Resistance = (Voltage)^2 / Power. Plugging in the values gives: Resistance = (120 V)^2 / 120 W = 120 ohms. So, the resistance of the 120-W incandescent lamp connected to a 120-V power supply is 120 ohms.
How much resisitance needs to go across 120 volts to draw 6 amps?
this is the formula R=E/I. 120/6=20 ohms of resistance.
What is the resistance of a 120 volt lamp draws 0.25 amperes of current?
v/i=r so 120/0.25=480 480 ohms is the resistance
In a home that has 120 v service heating is provided by electric resistance heat with an overall resistance of 40 ohms hom much heating power will the electric resistance heater generate?
The formula you are looking for is W = E(squared)/R, W = Voltage (squared) divided by Resistance.
How is the rating of a light bulb determined for instance 100W 60W is that how many watts an hour to run it?
No, the wattage is determined by the resistance of the filament in the light bulb. The formula to determine the wattage is Watts = Voltage (squared)/Resistance in Ohms. To find the resistance of a 120 volt light bulb use the formula, Resistance in Ohms = Voltage (squared)/Watts. So for a 100 watt bulb at 120 volts the resistance is 120 volts x 120 volts = 14400/100 = 144 ohms. For a 60 watt bulb at 120 volts the resistance is 120 volts x 120 volts = 14400/60 = 240 ohms. As you can see this holds true to Ohm's law, current is inversely proportional to the resistance of the circuit. The higher the resistance of a load, the harder it is for the current to flow. In this case less current results in less light being emitted from the filament in the light bulb.
What is the resistance of a circuit with 120V and 10A?
Assuming DC and resistive loads, resistance equals voltage across the load, divided by the current through it. In this case 120/10 or 12 ohms.
How much current will be drawn by a120v series circut containing a 100 ohm load and a 50 ohm load?
If they are in series, the total resistance is 150 ohms so the current is 120/150 amps. If they are in parallel, the current is 120/100 plus 120/50 amps.
How many amps will a 260 ohms resistor on a 120 volt circuit use?
Just use Ohm's Law Voltage = Current x Resistance Amps = Voltage Divided By Resistance Amps = 120 / 260
How much is 120 plus 120 equal to?
120 + 120 = 240
What is a resistance of the appliance If 24 amps of current flows through an appliance connected to a 120 v circuit.?
Let R be the resistance, V the voltage, and I the current R = V / I R = 120 / 24 R = 5 ohm
How much current is needed to light a bulb with 180 ohms of resistance using 120 volt power source?
V = I x R so current I = 1/2 amp. I bet the bulb is rated at 60 W because Watts = Current x Voltage. Where V = voltage (volt) I = current (ampere) R = resistance (ohm) Your question isn't easy to answer. A lamp has two 'resistances': a 'cold' resistance, and a 'hot' resistance. Before it is energised, it is cold, so its resistance is low; when it is energised, it becomes very hot, and its resistance increases significantly. So, the question is whether your '240 ohms' is the cold resistance or the hot resistance. If it is the cold resistance, then a current of 0.5 A will flow through it for a fraction of a second, then its resistance will increase significantly, and the current will fall to a very much smaller value.
