Two bulbs of 60 watts and 100 watts are connected in series and this combination is connected across the mains. Which bulb will glow more brightly? Give reasons.
What are the factors on which the resistance of a conductor depends?
Is the terminal potential difference always greater than its emf?
Two bulbs have a filament of the same length. If one is 40 watt and the other is 60 watt, which one has thicker filament??
Why voltmeter is always connected in parallel with the load resistance?
Why alloys of constantan and manganin used to make standard resistors?
A large number of free electrons are present metals. Why is there no current in the absence of electric field across it?
Explain the significance of a shunt with a diagram.
You are given 2 wires each of the resistance R. What is the ratio of maximum to the minimum resistance that can be obtained form these wires?
Why do electrons acquire a steady drift velocity?
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