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If a 12 volt parallel circuit has 4 lamps and each lamp consumes 1 amp what is the resistance of each lamp?
Wiki User
∙ 16y ago
Assuming you mean the 4 lamps are in parallel with each other: the total voltage drop across each lamp is still 12V. As we know that V= IR (Voltage = I Current times Resistance)
12 = 1 x R
so Resistance = 12 Ohms for each lamp.
Wiki User
∙ 16y ago
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Why is there less current in a circuit with four bulbs than there is in a circuit with one bulb?
yes because of bulb resistance :)
Why does one bulb make the others go out in a series circuit?
because current in parellel divides unlike in series if one fails all will failsAnswerThe parallel circuit's load current doesn't 'divide'. It's the other way around! Each branch draws an individual current which then 'combine' to form the circuit's load current. However, the reason that the remaining lamps connected in parallel always work, even if one fails, is because each branch of a parallel circuit is subjected to a common supply voltage.
In a circuit of two lamps in parallel if there is a voltage of 6 V across one lamp what is the voltage across the other lamp?
6 Volts.
Why do you connect electrical lamps in series?
If you are referring to house wiring, then you don't normally connect lamps in series with each other; they are normally connected in parallel with each other. When lamps are connected in parallel, each lamp is subjected to the same voltage; providing this is the rated voltage of each lamp, them each will operate at their rated power.If you did connect lamps in parallel, the you would find that the lamps with the higher power ratings will be dimmer than the lamps with the lower power ratings -which is not what you might expect!
What is the difference between a parallel circuit and a series circuit?
A parallel circuit is one in which there is more than one current path. An example might be several light bulbs in a house, all of which provide a path for electric current. The advantage is that any of the lamps can be turned on or off without affecting the current flow through any other lamp. A series circuit is one in which the current has only a single path through multiple components. An example might be two resistors, one after the other. Both will have the same current through them but they may have varying voltages depending on their resistance. Another example of a series circuit is a houehold lamp and a light switch. When the light switch is open, no current flows through it and therefore, no current can flow through the lamp either. When the switch is closed, current will now flow through the switch and the lamp.
What happens to the power output of each lamp if more lamps are connected in parallel?
The lamps will get dimmer. In a parallel circuit, voltage is constant. Whereas, in a series circuit, amps are constant.
If both series and parallel circuits have 1 cell and 3 lamps, which type of circuit would be brighter?
Parallel circuit.
If I have a circuit with four lamps each lamp is individually connected across the circuit so that the same current is not flowing through each lamp What type of circuit is this?
Parallel Parallel
If a 12 volt parallel circuit has 3 lamps what is the current?
See discuss.
As you add more lamps to a parallel circuit what will the ammeter reading do?
If the amp meter is in series ahead of the first parallel branch of lamps the meter will read an increase in current.
If each lamp is rated 12v 24w what is the current consumed by each lamp?
2 amperes in a parallel circuit. I = W/V. It is true provided that 12v are delivered to the lamps in parallel circuit. In a series circuit, the voltage is divided among the lamps so that the total current is probably 2 amperes for all lamps.
How do you calculate the current flow through a parallel circuit with three lamps each of 48 ohms?
To calculate the current in the parallel circuit we need the concept of ohms law, V=IR we know the resistance, R=48 ohms voltage will be constant as 220-230 volts so, I= V/R = 230/48 = 4.791 A Add currents of three lamps, ie., I = 14.375
Are homes on a series circuit?
No. Plugs, lamps and 220 V a.c. items are in parallel with the breakers.CorrectionAll loads are in parallel with the supply voltage, but in series with the circuit breakers or fuses.
When you compare 3 lamps in a series circuit to the same 3 lamps in a parallel circuit connected to the same 12-volt battery which statement is TRUE?
If a lamp burns out in parallel circuit, the other two lamps will continue to glow. If a lamp burns out in the series circuit, the other two lamps will also go out. If 3 lamps are in one series circuit, and one of them goes out, the loop is disconnected.
What happens to the brightness of the lights when you decrease the number of light bulbs in a circuit?
The brightness of the lights may or may not change depending on the circuit in which they are wired. In a series circuit, all the bulbs (called lamps) will experience the same current flow. The same amount of current will be flowing through each one, and each one will be dropping some amount of voltage. If we remove some of the lamps and reconnect the circuit, the lamps will glow brighter because there is less total resistance in the circuit. The remaining lamps will end up dropping more voltage, and will glow brighter. In a parallel circuit, removing bulbs (or adding them) will not affect the operation of the other lamps in the circuit (providing the voltage source is adequate). We know that each of the lights in a household circuit is wired in parallel, and turning one or more on or off won't affect the operation (the brightness) of any other light that is on.
If you unscrew the second bulb in a series circuit while the batteries are in a parallel circuit what happens?
The first lamp will go out. ANSWER: any lamps in series the first or the last if unscrewed will cause all lamps to extinguish no matter whether the source potential is in series or parallel
What happens to the power outputs of the sources if more lamps are connect in parallel?
Nothing will happen to the possible output power of the power source i.e it will not increase. Each power source has its maximum possible output power. Adding more lamps in parallel will result in a drop in the circuit's total resistance which causes the total current drawn by the lamps to increase. Your wires might be burnt as a result so be careful.
