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With the help of a diagram derive the fo...

With the help of a diagram derive the formula for the equivalent resistance of three resistances connected in parallels?

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MODERN PUBLICATION-ELECTRIC CURRENT. RESISTANCE AND E.M.F-EXERCISE
  1. A cell of e.m.f. E an internal resistance r is connected across an ext...

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  2. Obtain the condition fo rmaximum current through a resisitor, when a n...

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  3. Two cells of e.m.f E1 and E2 have internal resistance r1 and r2 respec...

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  4. n cells, each having emf. E and internal resistance r are connected in...

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  5. Show with the help of a diagram, how two cells may be connected in par...

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  6. Two identical cells, each of emf E, having negligible internal resista...

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  7. A number of identical cells, n , each of e.m.f. E, internal resistance...

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  8. Show that the resistance of a conductor is given by: R = (ml)/(n e^2 t...

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  9. State Ohm's law and derive it from the basic ideas of drift velocity o...

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  10. Resistance of a conductor depends on:

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  11. Explain the effect of temperature on the resistivity of pure semicondu...

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  12. What is the need of combining different resistors? What is the resulta...

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  13. With the help of a diagram derive the formula for the equivalent resis...

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  14. What is the need of combining different resistors? What is the resulta...

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  15. Why are resistance connected in parallel?

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  16. What is the difference between e.m.f. and potential diffrence?

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  17. Obtain the condition fo rmaximum current through a resisitor, when a n...

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  18. Obtain the condition for maximum current through a resistor, when a nu...

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  19. Memory cells are

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  20. Deduce the condition for obtaining maximum current through an external...

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