As far as a transformer is concerned, the secondary voltage Vs value cannot be determined by the primary voltage Vp alone. For the simplest of calculations the transformer primary-secondary turn ratio must be known. For an ideal transformer ( and practicaly ideal Transformers don't exist as there will be various losses in the transformer cores and windings), the simple equation relating secondary voltage to primary voltage would be :
Vs/Vp=Ns/Np=Ip/Is
where Ns is the number of winding turns in the secondary of the transformer, and Np the primary. Ip is the primary current and Is the secondary.
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.
It is 120V/60Hz
120V appliance will not work on 220V. Use an instrument transformer or voltage regulator to adjust the high voltage to the desired level.
there is 120V across the circuit.
there is 120V across the circuit.
120v
the voltage between 1 line & phase =120v The voltage between 2 line =240
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.
Brazil has a nominal voltage of 220/380V.
120v, 240v and 347v for lighting
100 Volts
Well transformers are used to either raise the voltage (step-up) or lower the voltage (step-down). Transformers have a high voltage winding (HV) and Low voltage winding (LV). If being used as step down then the supply will be connected to the winding with more turns and load will be connected to winding with fewer turns. This is reffered to as the turns ratio N1/N2 .If the ratio is 1/1 and 120V applied then the secondary voltage is 120v. If N1/N2 is 2/1 then there are twice and many primary turns as secondary turns and if 120 V applied to primary there would be 60 V on secondary.