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प्रश्न
How does the resistance of a metallic wire depend on the length of wire?
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उत्तर
The resistance of a wire increases with increases in the length of wire (R ∝ l).
संबंधित प्रश्न
Complete the following :-
(b)
Which of the following arrangement, A or B, has the lower combined resistance?
Explain with the help of a labelled circuit diagram, how you will find the resistance of a combination of three resistors of resistances R1, R2 and R3 joined in parallel.
A resistor of 8 ohms is connected in parallel with another resistor X. The resultant resistance of the combination is 4.8 ohms. What is the value of the resistor X?
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Five resistors, each 3 Ω, are connected as shown in Fig. Calculate the resistance
- between the points P and Q.
- between the points X and Y.
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Calculate equivalent resistance in the following cases:
Two resistors when connected in parallel give the resultant resistance of 2 ohms, but when connected in series the effective resistance becomes 9 ohms. Calculate the value of each resistance.
