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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
A 4 Ω coil and a 2 Ω coil are connected in parallel. What is their combined resistance? A total current of 3 A passes through the coils. What current passes through the 2 Ω coil?
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.
Two resistances when connected in parallel give resultant value of 2 ohm; when connected in series the value becomes 9 ohm. Calculate the value of each resistance.
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(i) 6 Ω
(ii) `6/1` Ω
(iii) 1.5 Ω
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The equivalent resistance of a parallel combination of two resistors of 30 Ω and 60 Ω is ______________.
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