Table of Contents
- 1 Why is there a decrease in the resistance when two resistors are connected in parallel class 10?
- 2 Why is there an increase in resistance when two resistors are connected in series?
- 3 Why is resistance more when resistors are joined in series?
- 4 How are the resistors connected to increase the value of resistance?
Why is there a decrease in the resistance when two resistors are connected in parallel class 10?
When two resistors are connected in parallel, the effective area of a cross-section through which the current can pass, increases. Since, the resistance of a wire is given by i.e., inversely proportional to the area of cross-section. Therefore, any increase in the area of cross-section decreases the resistance.
What will happen to a parallel circuit if you add more resistors?
Adding more parallel resistances to the paths causes the total resistance in the circuit to decrease. As you add more and more branches to the circuit the total current will increase because Ohm’s Law states that the lower the resistance, the higher the current.
Why is there an increase in resistance when two resistors are connected in series?
The endpoints of the resistors are connected, therefore the voltage drop must be the same, It is simple to solve this linear system and obtain so the total resistance is , which is smaller than both S and Q. Less formally, series connection requires to push current through both barriers.
Why does adding resistors increase resistance?
As more and more resistors are added, the current flow through each resistor decreases. This means, the total resistance of the circuit is increasing.
Why is resistance more when resistors are joined in series?
A series circuit can be used to determine the total resistance of the circuit. Essentially, wire resistance is a series with the resistor. It thus increases the total resistance and decreases the current.
Why does resistance increase in series combination of resistors?
In sereis combination of resistors, the effective length of the conductor incereases. As R∝l, therefore, resistance increases.
How are the resistors connected to increase the value of resistance?
In a series resistor network the individual resistors add together to give an equivalent resistance, ( RT ) of the series combination. The resistors in a series circuit can be interchanged without affecting the total resistance, current, or power to each resistor or the circuit.