Two rods are joined end to end, as shown. Both have a cross- sectional area of 0.01 cm². Each is 1 meter long. One rod is of copper with a resistivity of 1.7×10^-6 ohm-centimeter, the other is of iron with a resistivity of 10^-5 ohm-centimeter. How much voltage is required to produce a current of 1 ampere in the rods [2013] - VgyanHub

Question:

Two rods are joined end to end, as shown. Both have a cross- sectional area of 0.01 cm². Each is 1 meter long. One rod is of copper with a resistivity of 1.7×10^-6 ohm-centimeter, the other is of iron with a resistivity of 10^-5 ohm-centimeter. How much voltage is required to produce a current of 1 ampere in the rods [2013]

Options :

a)0.00145V
b)0.0145V
c)1.7 x 10^-6V
d)0.117V

Answer :

d)0.117V

Answer Steps :

Step:-1

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