Can the potential difference between terminals of battery ever be opposite in the direction of emf?
Why does an electric bulb nearly burn out just as you turn on the light, almost never while the light is shining?
A cylindrical rod has resistance R. If we double its length and diameter, what is its resistance in terms of 'R'?
What is the difference between emfand potential difference? Under what circumstances are the potential difference between the terminals of a battery and the emf of the battery equal to each other?
Ammeters often contain fuses that protect them from large currents while voltmeters seldom do. Explain.
Batteries are always labeled with their emf; for instance, an AA flashlight battery is labeled '1.5 volts'. Would it be appropriate to put a label on batteries stating how much current they provide? Why or why not?
Resistors R1 and R2 are connected in series to an emf source that has negligible internal resistance. What happens to the current through R1 when a third resistor R3 is connected in parallel with R2?
How can a galvanometer be converted into a voltmeter? Explain
Five bulbs are connected in series across 220-volt lines. If one bulb is fused, the remaining bulbs are again connected across the same line. Which one of the arrangements will be more illuminated? Justify your answer.
PathshalaNepal.com is a Registered Company of E. Pathshala Pvt Ltd Nepal. Registration number : 289280
© 2020. All right Reversed.E. Pathshala Pvt Ltd