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A voltage of 30 V is applied across a ca...

A voltage of 30 V is applied across a carbon resistor with first,second and third rings of blue,black and yellow colours respectively. Calculate the value of current , in mA,through the resistor.

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The correct Answer is:
0.05 mA
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CHHAYA PUBLICATION-CURRENT ELECTRICITY -EXERCISE ( PROBLEM SET-I)
  1. The resistance of a copper wire at 20^@C is 3 Omega and at 100^@ is 3....

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  2. The temperature coefficient of resistance of copper is 42.5 times 10^-...

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  3. A voltage of 30 V is applied across a carbon resistor with first,secon...

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  4. The resistance of a platinum wire of platinum resistance thermometer a...

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  5. A carbon resistor is marked in coloured bands in the sequence blue,gre...

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  6. The sequence of bands market on a carbon resistor are yellow,red,orang...

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  7. What percent will be the equivalent resistance of two resistances 2 Om...

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  8. With two resistances 2 Omega and 3 Omega In parallel a third resistanc...

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  9. Equivalent resistances of two resistors in their series and parallel c...

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  10. The equivalent resistances of two resistances in parallel combination ...

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  11. There are 14 resistances each of magnitude 1 Omega. Keeping three of t...

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  12. The resistance of an electrical appliance is 200 Omega and it can with...

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  13. The ratio of three resistances is 1:2:3 if the greatest resistance be ...

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  14. Emf of an electric cell is 2.1 V and its internal resistance is 0.1 Om...

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  15. Emf of an electric cell is 1.5 V and its internal resistance Is 2 Omeg...

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  16. A cell of emf 2.1 V and 0.1 Omega internal resistance sends 100 mA cur...

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  17. Electric current is sent through a resistance of 20 Omega from a batte...

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  18. Internal resistance of an electric cell is 1 Omega. Error is incurred ...

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  19. Current is sent from an electric cell of emf 30 V and of negligible in...

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  20. An electric cell of emf 2V and of negligible internal resistance is co...

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