0
What is the total resistance in a parallel circuit with a 10 ohm lamp and a 15 ohm lamp?
Wiki User
∙ 13y ago
Well, first of all, it's the current that's "going through" the wire, not the voltage.
The voltage is just the difference in pressure between the two ends, and that's
what makes the current want to go through it, towards the lower pressure. But
we understood what you meant in the question.
From Ohm's Law, [ I = E/R ] . (Current = voltage divided by resistance.)
I = (10)/(5) = 2 amperes.
You might not want to try this at home. The power dissipated by the wire is
P = I2 R = (2)2 (5) = 20 watts.
That's quite a bit of power for a piece of wire or a common resistor to dissipate.
The little round resistors with the color stripes that you see everywhere are
rated 1/4 watt, 1/2 watt, or 1 watt. One of those will pop if it tries to radiate
20 watts, and a piece of wire with 5-ohms will glow a nice hot bright red color.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoVoltage = Current x Resistance
So: Current (Amps) = Voltage (V) / Resistance (Ohms)
10/1000= 0.01 Amps
Wiki User
∙ 13y agoThe formula is 1/R = 1/R1 + 1/R2
The total resistane when resistors are in parallel is ALWAYS LESS than the lowest individual value.
In this case 6 ohm
Wiki User
∙ 13y agoI = E / R = 10/15 = 2/3 Ampere
Add your answer:
Earn +20 pts
If a 12 volt parallel circuit has 4 lamps and each lamp consumes 1 amp what is the resistance of each lamp?
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.
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.
Is tv parallel or series circuit?
The outlets in your house are in parallel with each other. If your question is is your TV in series with something else plugged into your house, it is not, it is in parallel (since your house wiring is in parallel). The giveaway for series or parallel circuits is if you remove one element in a series circuit, you will kill all other elements. In a parallel circuit, there shouldn't be a noticeable difference. For example, if you have a surge protector plugged into your wall, and a lamp plugged into your wall, and your TV and DVD player are plugged into the surge protector: The surge protector is in SERIES with your TV and DVD player The surge protector is in PARALLEL with your lamp The DVD player and TV are in PARALLEL
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.
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 :)
What happens to the ammeter reading when a lamp is added to a circuit which contains two cells and a lamp in series?
Assuming the new lamp is in series, the ammeter reading falls because the total resistance has increased. By how much depends on how the lamp resistance depends on voltage. If the lamp is added in parallel to the first, then the ammeter reading doubles.
If a 12 volt parallel circuit has 4 lamps and each lamp consumes 1 amp what is the resistance of each lamp?
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.
What would happen if a lamp was unscrewed from a parallel circuit?
There will be no change, because it is a parallel circuit.
What type of circuit is where removing one lamp leaves the other one on?
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
What type of circuit is it where removing one lamp leaves the other on?
Parallel Circuit
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.
What happens to the brightness of the bulbs in a parallel circuit?
A lamp's rated power only applies when the lamp is supplied with its rated voltage. If you connect the lamps in series, with the same supply voltage, then the lamps are no longer subjected to their rated voltage and, so, will not operate at their rated power.
In parallel circuit whathappens to the total resistance if one branch opens-Provide an example?
In a parallel circuit, each load added subtracts from total resistance. When one or more loads is removed from a parallel circuit, the total resistance is increased, reducing the total amperage draw. The less resistance a load has, the more current can pass through. This is part of Ohm's law. The mathematical equation that describes Ohm's law is: I=V/R , where I is the current in amperes, V is the potential difference in volts,and R is a circuit parameter called the resistance For example : The humble light-bulb is rated by the watts it uses. The amount of watts used by a light-bulb is calculated using Ohm's law. With the resistance of the bulb's filament and the voltage the bulb is designed to operate with, one can derive the amperage the bulb will draw. The amperage is then multiplied by the voltage to show wattage. Using Ohm's law : With the resistance of a 40watt 120volt light-bulb, only 0.33amps is able to pass through the bulb's 363ohm filament at 120volts. A lamp that has two 40watt bulbs inplace, and the two bulbs are in parallel, the circuit will have a resistance of 179ohms and draw 0.67amps which is 80watts at 120volts.
Is a voltmeter placed parallel to a circuit?
Depends. What did you want to measure? If it's voltage drop across the incandescent element, then you had better hook up your infinite resistance voltmeter in parallel with the lamp.
A ohm light and a 150 ohm heater are connected in parallel to a 150 volt power source. what is the total resistance of the lamp and the heater?
50 ohms...!
What happens to other lamps in a parallel circuit if one lamp burns out?
If one lamp in a parallel circuit burns out, the other lamps are unaffected because current still flows through them. Total current in the system is reduced by the loss of the burned out lamp, which will raise voltage ever so slightly. That will have the effect of brightening the other lamps, but that effect is inconsequential unless there is significant impedance in the source or in the path to the lamps.
