Explain 3. In which of the following cases is the net current equal to zero? a.

Question

Explain 3. In which of the following cases is the net current equal to zero? a. A beam of electrons flows left to right. b. A beam of protons flows left to right. c. A single helium nucleus is launched through a vacuum chamber. d. Blood, carrying equal numbers of positive and negative ions, flows through a vein. Explain Two wires are made from the same material and have the same lengths. Wire A's cross- sectional area is twice as big as Wire B's. Which wire has a larger resistivity? Your roommate performs an experiment and applies the same electric field to each wire. Which wire has more current flowing through it? 4.

Explanation / Answer

(3) The flow of blood will be equivalent to a net zero current. As blood consists of equal number of positive and negative charges, the net current will be zero.

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