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प्रश्न
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उत्तर
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संबंधित प्रश्न
Give one example to show how the resistance depends on the nature of material of the conductor.
A graph is plotted taking p.d. along y-axis and electric current along x-axis. Name the physical quantity that represents the slope of this graph (Fig.).
Three resistors of 6.0 Ω, 2.0 Ω and 4.0 Ω are joined to an ammeter A and a cell of emf 6.0 V as shown in the following figure. Calculate :
- the effective resistance of the circuit.
- the reading of ammeter.
A given metallic wire of resistance R is doubled on itself. What will be its new resistance?
How does the resistivity of an alloy such as constantace depends on temperature.
Six resistances are connected together as shown in the figure. Calculate the equivalent resistance between points A and B.
If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be:
Two electric bulbs have resistances in the ratio 1 : 2. If they are joined in series, the energy consumed in them is in the ratio:
