Question

Two wires A and B are of equal length, different cross sectional areas and
made of same metal.
(a) (i) Name the property which is same for both the wires,
(ii) Name the property which is different for both the wires.
(b) If the resistance of wire A is four times the resistance of wire B, calculate
(i) The ratio of the cross sectional areas of the wires and
(ii) The ratio of the radii of the wire.
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Answer 1

Answer:

Heya!!!

LA 4.11 50

Here is your answer dear........

Two wires A and B are of equal length, different cross-sectional areas and made of the same metal (A) Name the property which is same for both

the wires Answer: As the resistivity is independent of cross-sectional areas resistivity is same for

both the wires

(B) Name the property which is different for both the wires

Answer: As the resistance of the material depends on both the length and cross sectional area of the wire resistance

changes.

(C) If the resistance of the wire A is 4 times the resistance of wire B, Calculate the ratio of the radii of the wires.

Answer:

As the resistance is inversely proportional to

the square of the radius of the conductor, Ratio of the radii of the wires is RB: RA = 2:1

I HOPE THIS WILL HELP YOU OUT.....

HAVE A GREAT DAY DEAR.....

#Bhavana

Explanation: