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What is the difference between terminal ...

What is the difference between terminal voltage and emf of a cell ?

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The emf of a cell is the potential difference between its terminals in an open circuit i.e., when no current is being drawn from the cell. The terminal voltage is the potential difference between the terminals of cell in a closed circuit i.e., when some current is being drawn from the cell.
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U-LIKE SERIES-CURRENT ELECTRICITY -VERY SHORT ANSWER QUESTIONS
  1. Is electric current a scalar or a vector ? Why?

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  2. Why is the terminal voltage of a cell less than its emf?

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  3. What is the difference between terminal voltage and emf of a cell ?

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  4. A wire of resistivity rho is stretched to twice its length. What will ...

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  5. electrical conductivity, has the SI unit "ohm-metre”. Identify the phy...

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  6. Define electrical conductivity of a metallic wire. Write its SI unit.

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  7. Show variation of resistivity of copper as a function of temperature i...

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  8. Show on a graph the variation of resistivity with temperature for a ty...

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  9. A wire of resistance 8R is bent in the form of a circle. What is the e...

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  10. Define the term 'drift velocity' of charge carriers in a conductor and...

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  11. Write the expression for the drift velocity of charge carriers in a co...

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  12. How does drift velocity of electrons in a metallic conductor vary with...

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  13. A conductor of length L is connected across d.c. source of emf epsi . ...

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  14. Two conducting wires X and Y of same diameter but different materials ...

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  15. I-V graph for a given metallic wire at two temperatures T1 and T2 is a...

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  16. Two wires of equal length, one of copper and the other of manganin hav...

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  17. Nichrome and copper wires of same length and same radius are connected...

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  18. Write an expression for the resistivity of a metallic conductor showin...

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  19. Why are alloys, manganin and constantan used to make standard resistan...

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  20. When electrons drift in a metal from lower to higher potential, does i...

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