-- The voltage doesn't change.
-- If the second light bulb is identical to the first, then the total resistance drops by half.
-- If they're not identical, then we have to know the details of both before we can
calculate their combined effective resistance.
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.
Any devices that are added to a circuit and need the full line voltage to operate, are added in parallel to any other load devices or fixtures in the circuit.
series
The total resistance of the circuit increases. hence the new resistance after adding the resistance will be new resistance = old resistance + added Resistance There is a small mistake in the question. The second word is 'changes' not 'charges'
SERIES: A. If the additional battery is added to the circuit in a "Series Aiding" configuration, the bulb would get brighter. However, it would probably burn out very shortly, if not immediately, depending on the power rating of the bulb. Flashlight batteries such as two and three cell flashlights are usually series aiding. B. If the additional battery is added to the circuit in a "Series Opposing" configuration, the intensity of the bulb would decrease or go out completely if the opposing voltages are equal. (you can do a little experiment with a three or four cell flashlight by reversing the polarity of one or more of the batteries. The reversed battery will be series opposing and cancel 1.5 volts of the other batteries.) PARALLEL: If batteries are added to the circuit in parallel, the intensity of the bulb would remain the same but the batteries would last longer. Be sure the battery voltages are the same when adding batteries in parallel.
One of the parallel circuit focal points is that it guarantees all parts of the circuit have the same voltage as the source. Case in point, the second or each extra light added to the circuit would have the same shine.
No it's series circuit.
When a battery is added to a parallel circuit, the total voltage in the circuit increases as the new battery adds its voltage to the existing voltage sources. The total current in the circuit may also increase as the additional voltage motivates the charges to flow through the parallel branches of the circuit.
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.
Does it? See Related Links
• In a parallel circuit, there are junctions in the circuit so the current can flow around the circuit in more than one way. • In a series circuit the current decreases as more bulbs are added. •In a parallel circuit, as more bulbs are added, the current increases. • This is because bulbs added in parallel offer less resistance
When more bulbs are added to a parallel circuit, the total current in the circuit increases because each bulb provides an additional path for current to flow. This is because in a parallel circuit, the current is divided amongst the branches, so adding more branches (bulbs) will increase the total current.
Any devices that are added to a circuit and need the full line voltage to operate, are added in parallel to any other load devices or fixtures in the circuit.
You raise the total resistance by that amount if added in series to a circuit. If you add them in parallel to a circuit then that total resistance will be less than the total of the added circuit.
nothing
series
The total current provided by the battery increases as more bulbs are added to a parallel circuit. This is because each branch in a parallel circuit receives the full voltage of the battery, leading to more current flowing through each branch as more loads (bulbs) are added.