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The formula you are looking for is I = E/R. Amps = Volts/Resistance.
If you say it is normally a 2 Amp circuit, it normally draws 2 amps.
Therefore the original resistance offered to the 12v battery is 2/12 = 6 Ohms.
If you then connect a 12 Ohm resistor in series, they are added, so R = 18 Ohms.
Now if you put 12v across this circuit it will draw 12/18 = 0.66 Amps.
Or
If you just put a 12 Ohm resistor across the 12v supply it will draw 1 Amp.
If the circuit is protected by a 2 Amp fuse, it will not blow, but the resistor will get hot.
What else can I help you with?
How many amps will a 260 ohms resistor on a 120 volt circuit use?
Just use Ohm's Law Voltage = Current x Resistance Amps = Voltage Divided By Resistance Amps = 120 / 260
A 5 ohm resistor a 20 ohm resistor and a 25 ohm resistor are all connected in series to a 100 volt power source The current running through the circuit is?
E/R=I. 100/50=2 amps.
If two bulbs in a series are connect to a battery and the current in the first bulb is found to be 1 ampere then what is the current through the battery?
A circuit with a 2 ohm resistor and a 4 ohm resistor in series with a 12 volt battery will have 2 amps flowing through each resistor. The current is the same in each resistor because they are in series, and a series circuit has constant current throughout.
If there is a potential difference of 12 V across a resistor with 0.25 A current in it the resistance if the resistor is?
Resistance (Ohms) = Potential Difference (Volts) / Current (Amps) So, 12/0.25 = 48 Ohms.
What is the current flow if you apply 12v across a 68 ohm resistor?
0.1764 amps
What is the amps In a simple electric circuit with a 12 volt supply and a 24 ohm resistor?
0.5 amps
Is resistor measured in amps?
No, resistors are measured in ohms, not amps. Ohms represent the resistance offered by the resistor to the flow of current, whereas amps (amperes) represent the measure of current flowing through a circuit.
What watt resistor would you need in a 120 volt circuit with a 100 ohm resistor that has 2 amps load already?
If you connect a 100 ohm resistor across 120 volts it will draw 1.2 amps, amps = E/R. Power = volts x amps so the power required for the resistor would be 120 x 1.2 = 144 watts. It would not matter if the 120 volt circuit already has 2 amps load on it by something else to calculate the wattage of the resistor. The total power on this circuit would be the 144 watts from the resistor and 240 watts from the other 2 amp load (2a x 120v) for a total of 384 watts.
How many amps will a 260 ohms resistor on a 120 volt circuit use?
Just use Ohm's Law Voltage = Current x Resistance Amps = Voltage Divided By Resistance Amps = 120 / 260
What is the total current flowing through a 45 ohm resistor (1.4 amps) and a 20 ohm resistor (1.8 amps)?
Just add the amps (3.2 amps).
A 5 ohm resistor a 20 ohm resistor and a 25 ohm resistor are all connected in series to a 100 volt power source The current running through the circuit is?
E/R=I. 100/50=2 amps.
Can I replace a 12volt dc 2amp adaptor with a 12volt 1.5 dc adaptor?
by definition the wattage is the criteria 12v x 2amps=24 watts If the circuit in question needs 2 amperes then an exactreplacement mandatory, however if the circuit in question only draws 1.5 amps then it is realistic possible
How current passes through resistor.?
What is the current running through resistor four?1 amps..!What is the current running through resistor one? 3 amps...!What is the current running through resistor three? 2amps..!What is the current running through resistor five? 3 amps..!What is the voltage drop running through resistor five? 45 volts...!What is the equivalent resistance through the parallel portion of the circuit? 6 ohmsAnswerA resistor is a conductor, albeit one with a higher resistance than a length of wire, so current passes through it without any problem. The magnitude of the current will, of course, be somewhat lower because of the additional resistance.
How many amps equal 1 circuit?
80% of the rated circuit. 10 amp circuit is 8 amps, 20 amp circuit is 16 amps, etc.
If two bulbs in a series are connect to a battery and the current in the first bulb is found to be 1 ampere then what is the current through the battery?
A circuit with a 2 ohm resistor and a 4 ohm resistor in series with a 12 volt battery will have 2 amps flowing through each resistor. The current is the same in each resistor because they are in series, and a series circuit has constant current throughout.
02 jeep GC. I fixed wiring harnass for heater then fixed resistor then i am told that the blower motor is causing the resistor and harnass to burn. Is this possible. Do i have to replace all 3?
Yes, the blower tends to draw too many amps. Too many amps in the circuit will overheat the wires and connecters and melt them.
Cause of burnout of two resistor?
Too much current flowing in circuit. Sounds like a voltage was applied that exceeded the rating of the resistor. Resistors are rated in watts which is Volts times Amps. As an example, you might have a 1/2 watt rated resistor. If you applied 120 VAC across a 10 Ohm resistance then the current would be 12 Amps. The wattage would be 1,440 watts which is well in access of the rating and would certainly burn out the resistor.
