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What is the resistance of a clothes iron that draws a current of 12A at 120V?
By Ohm's Law Voltage = Current x Resistance R = V / I = 120 / 12 = 10 Ohms
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.
Is the voltage rating on a light bulb the rms value or peak value?
It's the RMS value. A 120 volt lamp (light bulb) is rated according to its RMS voltage. Just like appliances in the home are rated at 120 volts (like your fridge, microwave and toaster), or 220 volts (like your clothes dryer). Note that these appliances will have to stand up to the peak voltage on the AC line. Naturally. And the peak voltage on an AC line is 1.414 times the RMS value of voltage. That means in a 120 volt AC line (120 volts RMS), the peak value of the voltage will be 1.414 times the 120 volts, or right at about 170 voltspeak for each cycle.
An old television draws about 3 A of current It plugs into a wall outlet that is 120 V What is the resistance in ohms of the television?
Is this, intentionally, a trick question?We are dealing with alternating current, here, not direct current. So, if you divide the supply voltage by the current drawn by the television set, you are determining its impedance(Z), not its resistance:Z = V/I = 120/3 = 40 ohmsImpedance is the vector sum of resistance and reactance. As the current is probably being drawn by a transformer, the resistance will be significantly lower than the reactance, perhaps only an ohm or two -if that!So, from the information supplied, you cannot determine the resistance.
Convert ac voltage rms to dc voltage?
The dc voltage of a rectified ac voltage will be the peak value of the ac voltage less the forward voltage drop of the diode.The rms voltage of a sinusoidal ac voltage is sqrt(peak) / 2, but you also have to consider if the ac voltage is balanced around zero.For a normal US house voltage of 117VAC, the peak voltage is about 165V, or 330V peak to peak. Your dc voltage is then around 164V.Run that rectified voltage through a capacitor, and you will still have 164V peak value, but the voltage over time will dip because the capacitor will discharge during diode off time, and recharge when it turns back on.AnswerA given value of a.c. rms voltage is exactly equivalent to the corresponding value of d.c. voltage. For example, 120 V (rms) is exactly equivalent to 120 V d.c. This is why the alternative name for 'rms voltage' is 'effective voltage'. This is based on the fact that a current of, say, 10 A (rms) will do exactly the same amount of work as a d.c. current of 10 A. And, of course, voltage and current are proportional.
What is the electrical power of a toaster that uses a current of 15 A and a voltage of 120 V?
Multiplying 15 amps x 120 volts gives you 1800 watts, or the power consumed by the toaster
How much power is used by an ultrasonic jewelry cleaner that draws 0.042 a of current from a 120 v line?
Power = (voltage) x (current) = (120) x (0.042) = 5.04 watts
What is the resistance of a clothes iron that draws a current of 12A at 120V?
By Ohm's Law Voltage = Current x Resistance R = V / I = 120 / 12 = 10 Ohms
A microwave oven has a resistance of 24 ohms It draws 5 A of current What is the voltage in volts of the wall outlet that it is plugged into?
Ohm's Law says Voltage = Current x Resistance V = 5 x 24 = 120 V.
A power drill runs at a voltage of 120 V and draws a current of 4 A What is the wattage of the drill?
The wattage of the drill can be calculated by multiplying the voltage (120 V) by the current (4 A). Wattage = Voltage x Current Wattage = 120 V x 4 A = 480 watts. Therefore, the wattage of the drill is 480 watts.
What is the voltage of a circuit in a toaster with 12.0 amps of current and 8.0 ohms of resistance?
The formula you are looking for is Ohm's Law. Voltage = Current x Resistance (v = I x R). To solve for Current the formula is I = V/R.
A power drill runs at a voltage of 120 V and draws a current of 4 A. What is the wattage of the drill?
The formula you are looking for is W = A x V. Watts = Amps x Volts.
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.
What is the resistance of a toaster if 120 V produces a current of 4.2 A?
Vaginal discharge drumstick
How much current is drawn when an appliance rated at 795 W is plugged into a 120 V wall outlet?
To find the current drawn, use the formula: Current (I) = Power (P) / Voltage (V). Plugging in the values, I = 795 W / 120 V = 6.625 A. Therefore, the appliance draws approximately 6.625 A of current when plugged into a 120 V outlet.
How much current would a 4-watt light build draw?
All depends what voltage is applied across it.Assuming it's designed for operation at 120 VAC, then it draws 33-1/3 mA when it's turned on.(120 x 0.0333) = 4
What is the current in an ac circuit with 120volts and a 60watt light bulb?
Power = Current * Voltage Current = Power / Voltage Current = 60 W / 120 V Curretn = 0.5 A
