What happens to resistance when more resistors are added in series?

What happens to resistance when more resistors are added in series?

• A. It decreases
• B. It remains the same
• C. It increases
• D. It becomes zero

Answer: (C)

When resistors are added in series, the total resistance of the circuit increases. This is because in a series configuration, the current must pass through each resistor sequentially. Each resistor contributes its own resistance to the total. The total resistance can be calculated by simply summing the individual resistances. For example, if you have two resistors in series, the total resistance (R_total) would be the sum of the individual resistances (R1 + R2). If more resistors are added, this pattern continues—adding each new resistor increases the overall resistance. This principle is critical in understanding how circuits behave, as the increase in resistance will lead to a decrease in current if the voltage across the entire series remains constant, according to Ohm's Law (V = I * R). Therefore, when more resistors are added in series, the total resistance indeed increases.

When resistors are added in series, the total resistance of the circuit increases. This is because in a series configuration, the current must pass through each resistor sequentially. Each resistor contributes its own resistance to the total. The total resistance can be calculated by simply summing the individual resistances.

For example, if you have two resistors in series, the total resistance (R_total) would be the sum of the individual resistances (R1 + R2). If more resistors are added, this pattern continues—adding each new resistor increases the overall resistance.

This principle is critical in understanding how circuits behave, as the increase in resistance will lead to a decrease in current if the voltage across the entire series remains constant, according to Ohm's Law (V = I * R). Therefore, when more resistors are added in series, the total resistance indeed increases.