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Resistance of a System of Resistors in Series & Parallel Video Lecture | Crash Course: Class 10

FAQs on Resistance of a System of Resistors in Series & Parallel Video Lecture - Crash Course: Class 10

1. What is the resistance of a system of resistors in series?

Ans. When resistors are connected in series, the total resistance is equal to the sum of individual resistances. This can be calculated using the formula: Total Resistance (Rs) = R1 + R2 + R3 + ...

2. How do you calculate the total resistance of resistors in parallel?

Ans. When resistors are connected in parallel, the reciprocal of the total resistance is equal to the sum of the reciprocals of individual resistances. This can be calculated using the formula: 1/Total Resistance (Rp) = 1/R1 + 1/R2 + 1/R3 + ...

3. What happens to the total resistance when resistors are connected in series?

Ans. When resistors are connected in series, the total resistance increases. This is because the current flowing through each resistor is the same and the voltage across each resistor adds up, resulting in a higher overall resistance.

4. What happens to the total resistance when resistors are connected in parallel?

Ans. When resistors are connected in parallel, the total resistance decreases. This is because the voltage across each resistor is the same and the current flowing through each resistor adds up, resulting in a lower overall resistance.

5. Can the total resistance of a system of resistors in series or parallel be less than the resistance of any individual resistor?

Ans. No, the total resistance of a system of resistors in series or parallel can never be less than the resistance of any individual resistor. In series, the total resistance is always greater than any individual resistance, while in parallel, the total resistance is always less than any individual resistance.

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Sep 20, 2025 Last updated

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