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If a load resistance r then power suppli...

If a load resistance `r` then power supplied by the cell to load `R` is maximum if ….. And maximum power is given by …..

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The correct Answer is:
`R = r; E^(2)//4 r`
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(a) A cell of emf E and internal resistance r is connected to a resistance R . (i) Relate r and R , so that power in R is maximum. (ii) Maximum power consumed by R . (iii) Efficiency. (b) Find value r in terms of R so that power in external circuit is maximum. (c) A battery of internal resistance 4Omega is connected to the network of resistance as shown in the figure. what must be the value of R so that maximum power is delivered to the network? what is tha maximum power?

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A cell of emf epsilon and internal resistance r is connected across a load resistance R (i) Find the maximum power delivered at the load ? (ii) Draw the power (P ) vs load resistance ( R ) graph.

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If a battery of emf E and internal resistance r is connected across a load of resistance R . Shot that the rate at which energy is dissipated in R is maximum when R = r and this maximur power is P = E^2//4r .

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PRADEEP-CURRENT ELECTRICITY-Exercise
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  2. The ratio of output power to input power of an elecrtic device is call...

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  3. If a load resistance r then power supplied by the cell to load R is ma...

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  4. If a battery of emf E, internal resistance r is being charged by a cur...

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  5. If 2 xx 10^(20) electrons pass through a loop in one minute, What is t...

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  6. In Bohr model of hydrogen atom , the electron revolves around the nucl...

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  7. A solution of sodium chloride discharge 6.0 xx 10^(16)Na^(+) and 4.5 x...

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  8. In hydrogen atoms, the electron moves in an orbit of radius 5.0xx 10^...

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  9. If 0.6 mole of electrons through a wire in 50 minutes What is (a) the ...

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  10. The charge flowing through a conductor varies with time as q= 8 t - ...

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  11. The charge flowing in a conductor varies with time so q = 2t - 6t^(2)+...

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  12. Shows on a plot of current I through the cross section of the wire ove...

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  13. An electric current of 20 mu A appears in a discharege tube if the dis...

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  14. A conductor of length L is connected to a dc source of emf epsilon. If...

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  15. A copper wire has a resistance of 10 Omega and an area of cross-sectio...

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  16. The number of free electrons per 100 mm of ordinary copper wire is 2xx...

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  17. Estimate the average drift velocity of conduction electrons in a coppe...

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  18. A copper wire of diameter 1.0 mm carries a current of 0.2 A. Copper ha...

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  19. What is the drift velocity of electrons in a silver wire of length 1m ...

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  20. Protons in cosmic-rays strike the earth's over the earth's surface of ...

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