Choose true or false for each statement regarding the resistance of a wire. Whil

Question

Choose true or false for each statement regarding the resistance of a wire. While maintaining a constant voltage V, the current I decreases when the resistivity rho of a wire decreases. While maintaining a constant voltage V, the current I increases when the cross-sectional area A of a wire contracts. The resistivity does not depend on the temperature of most metal wires. Choose true or false for each statement regarding resistors in a circuit. If you connect two different resistors in series in a circuit, then the current that flows through each of them is the same. If you connect two different resistors in series in a circuit, then the voltage across each of them is the same. Two identical resistors in series have double the resistance of each individual one.

Explanation / Answer

R= resistivity ×l/A

If resistivity decrease R decrease so current will increase so first statement is false

A decrease R increase, so current decrease hence second statement false

Resitivity depends upon temperature hence third statemnt is false

2) true

False

Equivalent resistance = R+R =2R hence true

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