The current flowing through a bulb is equal to the (voltage across the bulb) divided by the
(bulb resistance), and can be expressed in Amperes.
The rate at which the bulb dissipates energy is equal to (voltage across the bulb)
times (current through the bulb), and can be expressed in watts.
Everything Depends on the voltage supply ...... Current flow (Amp) = Watt / Voltage the Current flow will be 1 amp if voltage is 1 V the Current flow will be 0.5 amp if voltage is 2 V the Current flow will be 0.25 amp if voltage is 4 V and so on.......
The current is the same going into a bulb as it is coming out.
Watt
A 100 watt 220 volt light bulb (or anything consuming 100 watts on 220 volts) draws 100/220, or .45 Amps. It will also have about 220²/100, or 484 ohms resistance. A 60 watt 220 volt light bulb (or anything consuming 60 watts on 220 volts) draws 60/220, or .27 Amps. It will also have about 220²/60, or 807 ohms resistance.
A series circuit is where there is only one path for the current. As a result, and as a direct consequence of Kirchoff's current law, the current at every point in a series circuit is the same. The two bulbs have the same current flowing through them.
current consumtion of a bulb
A 60 watt bulb at 12 volts will pull 5 amps of current.
The current is 0.83 amps on 120 v or 0.42 amps on 240 v.
A 50 watt bulb designed to run on 12 volts takes 4.17 amps. A 50 watt bulb designed to run on 230 volts takes 0.217 amps.
As long as the lamp holder will take the larger wattage lamp and the current of the circuit is sized to take the larger current then yes, the lamps should be interchangeable.
Considering an incandescent bulb and using P=VxI P= Power Watts V= Volts I= Current (amperes) I=P/V I=75Watts/120Volts = 0.625 Amperes (A or Amps) Therefore the current through a 75watt bulb that is connected to a 120volt circuit is 0.625 amps.
You can get a 65-watt alternator to generate the current, or alternatively it can be bought from the electricity supply company in many locations.
voltage, current and power factor
To answer this question a voltage must be given.
No. A 70 Watt metal halide bulb can not be replaced with a 150 Watt halide bulb.
No, a higher wattage INCANDESCENT light bulb uses more current than a lower wattage INCANDESCENT light bulb. Some CF and LED bulbs are rated by the amount of light that an incandescent bulb would produce, but they are also rated by the wattage that they use.
.5 amp