Each bulb will individually have the same voltage and its current will be affected by any resistance preceding the bulb. 5. Explain the relationship between current at the battery and current through each bulb in the parallel circuit.
Current at the battery will total the currents of all the bulbs that are switched on
.
What is the relationship between the voltage output at the interface and the voltage across the two light bulbs?
For the combination circuit, explain the relatinship between the voltage output at the interface and the voltage across the 2 light bulbs.
Voltage from the battery is the same as the voltage across each branch of the circuit
.
What is the relationship between the current at the battery and each bulb in the circuit?
The bulb between Z and the battery will be the brightest. The current in a series circuit
is the same at each resistor present in the circuit
. Since each light bulb has the same resistance (“identical bulbs”) and the same current, they will have the same power output (P = I
2
R as discussed in the previous Lesson ).
What is the relationship between the current at the battery vs the others?
The current in a circuit is
directly proportional to the electric potential difference impressed across its ends
and inversely proportional to the total resistance offered by the external circuit. The greater the battery voltage (i.e., electric potential difference), the greater the current.
Is there any relationship between the voltages across each light bulb and its resistance explain?
The
current is directly proportional to the voltage and inversely proportional to the resistance
. This means that increasing the voltage will cause the current to increase, while increasing the resistance will cause the current to decrease.
Why current in series is same?
The amount of current in a series circuit is the same through any component in the circuit. This is because
there is only one path for current flow in a series circuit
.
What happens to the current in a series circuit when more bulbs are added?
As more and more light bulbs are added, the brightness of each bulb gradually decreases. This observation is an indicator that the current within the circuit is decreasing. So for series circuits, as more resistors are added
the overall current within the circuit decreases
.
What is the relationship between total voltage and individual bulb voltages in a parallel circuit?
In a parallel circuit,
the voltage across each of the components is the same, and the total current is the sum of the currents flowing through each component
. Consider a very simple circuit consisting of four light bulbs and a 12-volt automotive battery.
What is the voltage across each bulb?
The voltage across each lamp is now
60 volts
due to the reduced current flow. Each bulb is operating at only one-half its intended voltage, which will reduce its brightness. Since each bulb is the same size, they each see equal voltage drop.
What is the primary difference between a series circuit and a parallel circuit?
In a series circuit, all components are connected end-to-end, forming a single path for current flow. In a parallel circuit,
all components are connected across each other
, forming exactly two sets of electrically common points.
Electrons are negatively charged. …
Current is the rate of flow of positive charge
. Current can be caused by the flow of electrons, ions or other charged particles. Electrons are negatively charged, so the direction electrons flow is the opposite direction to current.
What is the relationship between current and resistance?
The relationship between current, voltage and resistance is expressed by Ohm’s Law. This states that the current flowing in a circuit
is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit
, provided the temperature remains constant.
Why does voltage decrease when current increases?
The current required to carry a given power decrease when you increase the voltage
because the power is the product of the current with the voltage (and power factor)
. as per the formul;I=P/V…… SO if we keep the value of ‘P’ CONSTANT AND VARRY THE VALUE OF ‘V’then we get the value of i will less.
What is the difference between current voltage and resistance?
Voltage
is the difference in charge between two points. Current is the rate at which charge is flowing. Resistance is a material’s tendency to resist the flow of charge (current).
What happens to current when voltage increases?
Ohm’s law states that the electrical current (I) flowing in an circuit is proportional to the voltage (V) and inversely proportional to the resistance (R). Therefore, if the voltage is increased,
the current will increase provided the resistance of the circuit does not change
.
What is the relationship between current and resistance when voltage is constant?
One way Ohm’s Law can be stated is: “a current flowing through a conductor is directly proportional to the voltage, given the temperature of the conductor remains constant”. Therefore, if the resistance is kept constant, then
doubling the voltage doubles the current
.
