Depends -
in the real world as a resistor gets hotter (current flowing through it) its resistance increases.
An increase in resistance in a series circuit can be caused by adding resistors in series, increasing the length or cross-sectional area of the wire, or using a material with higher resistivity. This leads to a higher total resistance in the circuit, which can reduce the current flowing through it.
In a series circuit, if one resistor is replaced with a resistor of lower resistance, the total resistance in the circuit decreases. This leads to an increase in the overall current flowing through the circuit.
When the current increases as a voltage is applied to the bulb it causes the bulb's special wire filament to get so hot that it glows very brightly. The heating causes changes in the normal electron lattice of the filament, creating more barriers to the flow of the electrons and therefore the resistance of the wire increases as it gets hotter.
When you increase the resistance in a circuit, the current (amps) in the circuit will decrease. This is because Ohm's Law states that current is inversely proportional to resistance, so as resistance increases, current decreases.
Resistance in a series circuit is added by simply connecting resistors end-to-end. This results in the total resistance being the sum of the individual resistances. The current passing through each resistor in a series circuit remains the same.
If you add a second resistor, the resistance of series circuit will increase.
An increase in resistance in a series circuit can be caused by adding resistors in series, increasing the length or cross-sectional area of the wire, or using a material with higher resistivity. This leads to a higher total resistance in the circuit, which can reduce the current flowing through it.
In a series circuit, if one resistor is replaced with a resistor of lower resistance, the total resistance in the circuit decreases. This leads to an increase in the overall current flowing through the circuit.
An increase in voltage or a decrease in resistance will cause an increase in current flow in a simple series circuit. This is because current is directly proportional to voltage and inversely proportional to resistance according to Ohm's Law.
If you add another resistor or just increase the resistance the current will decrease. I think the statement you are talking about means that whatever the current is in the series circuit it will be the same everywhere in that circuit, on both sides of the resistance. The resistance lowers the current in the entire circuit, not just after the resistance.
It depends on what you want to accomplish. If you want to decrease the resistance in a circuit, you would place the box in parallel to some other resistor. If you want to increase the resistance in a circuit, you would place the box in series.
In the circuit where the DC motor is added, it was not specified whether the motor was added in series or in parallel to circuit elements. If it was added in series, it will increase circuit resistance and it will cause circuit current to go down. In parallel, the motor will reduce total circuit resistance, and circuit current will increase.
The total resistance in a series circuit is determined by adding (summing) the individual resistances of each component in the circuit.
Voltage divided by total resistance will give the current. The resistance is simply the sum of all the individual resistances.
Resistances are additive in a series circuit.
The resistance of a series circuit is simply the sum of the individual resistors.
To increase (current) flow in a circuit you increase voltage (or decrease resistance). Ohm's Law: Current = Voltage divided by resistance