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What will be the change in the resistanc...

What will be the change in the resistance of the Eureka wire,when its radius is halved and length is reduced to one-fourth of its original length?

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resistance is unchanged
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CHHAYA PUBLICATION-CURRENT ELECTRICITY -EXERCISE ( VERY SHORT ANSWER TYPE QUESTION)
  1. Two conducting wires of lenghts l and 2l have the same cross-sectional...

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  2. Two wires A and B are of the same metal and of the same length. Their ...

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  3. What will be the change in the resistance of the Eureka wire,when its ...

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  4. Two wires A and B of the same metal have the same across sectional are...

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  5. Name a substance whose resistance decreases with in the increases in t...

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  6. What is the unit of temperature coefficient of resistance?

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  7. The temperature coefficient of resistance for the material of a conduc...

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  8. A carbon resistor is coloured with four different bands=brown,black,or...

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  9. Resistance of a carbon resistor is 6.8 k Omega.What is the first three...

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  10. Of metals and alloys,which has greater value of temperature coefficien...

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  11. How are different electrical appliances connected In domestic electric...

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  12. Two resistances 1 Omega and 2 Omega are connected in series and a pote...

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  13. Two resistances 1 Omega and 2 Omega are connected in parallel and a p...

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  14. What is the value of I in the circuit of Fig.1.64?

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  15. Equivalent resistance in a parallel combination is ...... than each of...

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  16. Two resistance of 6 Omega and 3 Omega are connected in parallel when ...

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  17. A metallic wire of resistance R is folded into two equal parts and the...

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

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  19. The equivalent resistance of two resistances in series is four times t...

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  20. Three resistances,each of 4 Omega, are connected in the form of an equ...

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