#1
In a DC series circuit, what happens to the voltage across each resistor?
It decreases as more resistors are added.
ExplanationVoltage decreases with additional resistors due to voltage division.
#2
What is the total voltage in a DC series circuit?
The sum of the individual voltages across each resistor.
ExplanationTotal voltage equals the sum of individual voltages according to Kirchhoff's Voltage Law.
#3
What is the relationship between voltage and current in a DC series circuit?
They are directly proportional.
ExplanationVoltage and current increase or decrease together in a linear relationship.
#4
How does the total resistance in a DC series circuit compare to the individual resistances?
It is equal to the sum of the individual resistances.
ExplanationTotal resistance is the sum of all individual resistances in series.
#5
What is the main disadvantage of connecting resistors in series?
Lower total resistance
ExplanationSeries connection decreases total circuit resistance.
#6
Which law is used to calculate the total voltage in a DC series circuit?
Kirchhoff's Voltage Law
ExplanationKirchhoff's Voltage Law governs total voltage calculation in a series circuit.
#7
If three resistors are connected in series and one of them has a higher resistance than the others, what happens to the voltage across that resistor?
It increases compared to the other resistors.
ExplanationHigher resistance leads to greater voltage drop across the resistor.
#8
What happens to the current in a DC series circuit if one resistor is removed?
The current becomes zero.
ExplanationThe circuit is broken, resulting in zero current flow.
#9
What effect does a decrease in resistance have on the voltage drop across a resistor in a DC series circuit?
The voltage drop increases.
ExplanationLess resistance leads to higher voltage drop across the resistor.
#10
What does the slope of the voltage-current graph represent in a series circuit?
Total resistance
ExplanationThe slope indicates the resistance value in a linear relationship.
#11
What happens to the total resistance in a DC series circuit when more resistors are added?
It increases.
ExplanationTotal resistance rises with the addition of resistors.
#12
If the total voltage in a DC series circuit is 12 volts and there are two resistors with equal resistance, what is the voltage drop across each resistor?
6 volts
ExplanationEqual division of voltage across resistors results in 6 volts each.
#13
What happens to the total power dissipated in a DC series circuit if the total resistance increases?
It decreases.
ExplanationAs resistance increases, less current flows, reducing power dissipation.
#14
What happens to the total voltage in a DC series circuit if the number of resistors is increased while keeping the total resistance constant?
It remains the same.
ExplanationTotal voltage doesn't change as resistors are added in series.
#15
What is the voltage drop across a resistor in a series circuit if the current through it is 0.5 amperes and the resistance is 10 ohms?
5 volts
ExplanationVoltage drop equals current multiplied by resistance (Ohm's Law).