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The equivalent resistance across XY is...

The equivalent resistance across XY is

A

r

B

`2r`

C

`r//2`

D

`r//4`

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The correct Answer is:
C
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AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (CUTTENT ELECTRICITY )
  1. Equivalent resistance across A and B in the given circuit is

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  2. Calculate the effective resistance between the points A and B in the c...

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  3. The equivalent resistance across XY is

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  4. An aluminium ( alpha(Al) = 4 xx 10^(-3) //""^(0) C) wire resistance R1...

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  5. A carbon filament has resistance of 120Omega at 0^(@)C what must be t...

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  6. The resistance of a metal wire is 10 Omega . A current of 30 mA is flo...

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  7. The maximum voltage that can be applied to 5 KOmega and 8W resistor w...

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  8. Three equal resistors connected in series across a source of emf toget...

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  9. Same mass of copper is drawn into 2 wires of 1 mm thick and 3mm thick....

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  10. Masses of three wires are in the ratio 1:3:5. Their lengths are in the...

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  11. The specification on a heater coil is 250 V, 500 W. Calculate the resi...

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  12. In the following circuit, 5Omega resistor develops 45 J/s due to curre...

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  13. In a large building, there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 f...

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  14. Two wires A and B of the same material and mass have their length in t...

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  15. Two wires 'A' and 'B' of the same material have their lengths in the r...

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  16. When two identical cells are connected either in series or in parallel...

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  17. Two cells of the same e.mf. e but different internal resistances r(1) ...

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  18. The p.d. across the terminals of a battery is 50 V when 11 A are drawn...

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  19. A dc source of emf E1 = 100 V and internal resistance r =0.5 Omega ,a ...

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  20. A 6V cell with 0.5Omega internal resistance and 10V cell with 1Omega i...

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