According to the material, in a series circuit, current outside the power source flows from which direction?

According to the material, in a series circuit, current outside the power source flows from which direction?

• A. From negative to positive
• B. From positive to negative
• C. It stays inside the source
• D. It depends on the load

Answer: (A)

Charges move in a circuit, and there are two common ways to describe their direction. In a series circuit, the same amount of current flows everywhere, but the stated direction depends on the convention you use. If you’re following conventional current, the external path goes from the power source’s positive terminal through the circuit to the negative terminal. Inside the source, the energy source pushes charges from negative toward positive. Some materials describe current using the actual motion of electrons, so the external current is described as flowing from negative to positive, since electrons move from the negative terminal toward higher potential. The answer given follows this electron-flow convention, which is why it states the external current direction as from negative to positive.

Charges move in a circuit, and there are two common ways to describe their direction. In a series circuit, the same amount of current flows everywhere, but the stated direction depends on the convention you use. If you’re following conventional current, the external path goes from the power source’s positive terminal through the circuit to the negative terminal. Inside the source, the energy source pushes charges from negative toward positive. Some materials describe current using the actual motion of electrons, so the external current is described as flowing from negative to positive, since electrons move from the negative terminal toward higher potential. The answer given follows this electron-flow convention, which is why it states the external current direction as from negative to positive.