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What happens to the total resistance of a series circuit when another resistor is added?
Wiki User
∙ 14y ago
Simply put, the purpose of a resistor is to 'resist' the flow of current. Ohm's Law tells us that for a given voltage, the larger the resistance, or value of that resistor, the lower the current that will flow. Ohm's Law states that I (current) = E (voltage) / R (resistance)
- where current is measured in amps, voltage is measured in volts and resistance is measured in ohms.
Wiki User
∙ 16y ago
Wiki User
∙ 13y agoThe more resistors added into a parallel circuit, the higher the current will be. When you add more resistors the total resistance will decrease more and more as you add, and since I=V/R, then the lower the R, the lower I (current) has to be divided, thus it becoming higher.
Wiki User
∙ 15y agoThe resistance goes up and the current goes down.
Ohms Law: current = voltage/resistance
Wiki User
∙ 12y agoIncreasing resistance in a series circuit would decrease current.
Wiki User
∙ 14y agoThe total resistance increases.
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What happens in a series circuit if the resistance is halved?
If you add a second resistor, the resistance of series circuit will increase.
What happens if a circuit has no resistance?
Then the voltage in will equal the voltage out. The purpose of a resistor is to reduce the amount of electrical flow of current. You 'short out' the supply and blow a fuse/circuit breaker.
What is the lifespan of a resistor?
A resistor doesn't deteriorate with age, and has no particular 'life-span', as long as it's used properly. -- A resistor in a box on the shelf, or in a circuit where it stays cool, will last indefinitely. -- A resistor in a circuit where it's forced to dissipate enough power to make it hot may change its resistance value permanently, but will continue to operate. -- A resistor in a circuit where it's forced to dissipate even more than that, to a ridiculous extreme, may melt or explode. When that happens, it's the end of the resistor's life-span. But it wasn't the resistor's fault.
What happens when you add a resistor to a series circuit with a light bulb?
As you add more bulbs to a series circuit that means that the bulbs are in series to one another, therefore the total resistance is the sum of the individual resistance of the bulbs. If you add bulbs of the same resistance,then the rate at which the resistance changes will increase in a constant manner provided the current source is not altered. For instance if the bulb you are using is rated 20v,60w, then the current passing via the bulbs in series is the square of the voltage divided by the power in this case the current is approximately 7amperes.
What happens when resistance is varied in a circuit?
A resistor will not change its value, unless the voltage exceeds the designed power capacity of the resistor. As the voltage increases, the current will increase, if the current gets too high it will cause the temperature of the resistor to increase, if the temperature exceeds the power rating of the resistor then the resistance WILL change. If it goes too High in temperature the resistor will open and current will no longer flow. A resistor is used to control current, and indirectly the .voltage depending on the application. Hope This helps. You must use Ohms Law to see the relationship.
What happens in a series circuit if the resistance is halved?
If you add a second resistor, the resistance of series circuit will increase.
What happens if a circuit has no resistance?
Then the voltage in will equal the voltage out. The purpose of a resistor is to reduce the amount of electrical flow of current. You 'short out' the supply and blow a fuse/circuit breaker.
What is the lifespan of a resistor?
A resistor doesn't deteriorate with age, and has no particular 'life-span', as long as it's used properly. -- A resistor in a box on the shelf, or in a circuit where it stays cool, will last indefinitely. -- A resistor in a circuit where it's forced to dissipate enough power to make it hot may change its resistance value permanently, but will continue to operate. -- A resistor in a circuit where it's forced to dissipate even more than that, to a ridiculous extreme, may melt or explode. When that happens, it's the end of the resistor's life-span. But it wasn't the resistor's fault.
What happens when you add a resistor to a series circuit with a light bulb?
As you add more bulbs to a series circuit that means that the bulbs are in series to one another, therefore the total resistance is the sum of the individual resistance of the bulbs. If you add bulbs of the same resistance,then the rate at which the resistance changes will increase in a constant manner provided the current source is not altered. For instance if the bulb you are using is rated 20v,60w, then the current passing via the bulbs in series is the square of the voltage divided by the power in this case the current is approximately 7amperes.
What happens when resistance is varied in a circuit?
A resistor will not change its value, unless the voltage exceeds the designed power capacity of the resistor. As the voltage increases, the current will increase, if the current gets too high it will cause the temperature of the resistor to increase, if the temperature exceeds the power rating of the resistor then the resistance WILL change. If it goes too High in temperature the resistor will open and current will no longer flow. A resistor is used to control current, and indirectly the .voltage depending on the application. Hope This helps. You must use Ohms Law to see the relationship.
What will the resistor display when its burned zero or what?
I believe in that case, it would normally let no current pass. If that happens, the resistance indicator will show a very high resistance value, since resistance is defined as voltage divided by current. This is often called something like "infinite resistance".
What happens to the current in a circuit if a 10 ohm resistor is removed and replaced by a 20 ohm resistor?
Voltage, current, and resistance can be related by this formula. V = iR, where I is the current. Assuming that the voltage stays constant, current will decrease. Hope this helps!
When resistance is in a circuit what happens to the current?
When you add resistance to a circuit, current goes down. Ohm's Law: current = voltage divided by resistance.
What happens in a circuit consisting of a voltage source and a resistor when the resistance is reduced by 35 percent?
I = V / R I = V / (0.65 R) I = 1.54 V / R Current increases by about 54%
When a dead short occur what happens to circuit resistance?
The circuit resistance is likely to gradually drop and in such case it will cause the circuit to burn down.
What happens if you shorten the resistance wire in a circuit?
It shortens
What happens to amps when you increase the resistance of a circuit?
If you don't change the voltage between the ends of the circuit,then higher resistance in the circuit means lower current (amps).
