PHY113-2 (Electric Circuits)

In an electric circuit, an energy source and an energy consuming device are connected by conducting wires through which electric charges are stored.

• True

• False

Answer explanation

In an electric circuit, an energy source and an energy consuming device are connected by conducting wires through which electric charges move.

Within a battery, a chemical reaction occurs that transfers electrons from one terminal to another terminal.

• True

• False

The maximum potential difference across the terminals is called the

• electromotive force (emf)

• electric force (ef).

• counter-electromotive force (cemf)

• counter-electric force (cef)

It is the amount of charge per unit time that passes through a surface that is perpendicular to the motion of the charges.

• Electric current
• Capacitance
• Resistance
• Voltage

Current Formula

If the charges move around the circuit in the same direction at all times,

the current is said to be

• direct current (dc)

• alternating current (ac)

If the charges move first one way and then the opposite way, the current is said to be

• direct current (dc)

• alternating current (ac)

Is is the hypothetical flow of positive charges that would have the same effect in the circuit as the movement of negative charges that

actually does occur.

• Conventional current
• Electric potential
• Resistive flow
• Negative current

It is defined as the ratio of the voltage V applied across a piece of material to the current I through the material.

• Conductance
• Impedance
• Resistance
• Capacitance

It states that the electric current through a conductor between two points is directly proportional to the voltage across the two points

• Coulomb's Law
• Faraday's Law
• Kirchhoff's Law
• Ohm's Law