Lesson 8 DC Circuits

Electric current that flows in only one direction is called ___ current.

• alternating

• direct

• parallel

• series

If the current remains constant and in one direction, the current produces a constant

• potential difference

• number of electrons

• electromagnetic field

• resistance

One coulomb per second is defined as 1

• ampere

• ohm

• volt

• watt

Doing work at the rate of 1 joule per second is defined as a power of 1

• ampere

• ohm

• volt

• watt

If a circuit has only one path for electricity, the circuit is called a(n) ___ circuit.

• alternating-current

• direct-current

• parallel

• series

When current flows through two or more loads, the potential difference across one load is called

• voltage breakdown

• voltage drop

• resistance decrease

• current decline

In a parallel circuit, each additional branch increases the current and decreases the circuit's

• resistance

• potential difference

• conductance

• voltage breakdown

Before trying to solve a series-parallel problem, you should try to divide the circuit into

• two sections

• units

• series

• simpler parts

When two parallel paths are available, the path having the lower resistance carries

• no current

• half the current

• more than half the current

• all the current

When making measurements on an energized circuit, you must use extreme care to

• get the correct reading

• avoid electrical shock

• open the circuit

• use the meter correctly