Circuits (201) QUIZ 1

A voltage drop is:

-called a difference of potential -the loss of energy by electrons as they flow through a resistance -the comparison of energy lost from one end of a resistance to the other

What potential (voltage) exists between two power supply terminals if 5 J of energy is required to move 10 C of charge between the terminals? (V = W/Q)

0.5 V

Five coulombs of charge flow past a point in 0.5 seconds. How many amperes of current are flowing? (A= C/s)

10 A

If there is 100 mA of current flowing into a three-branch parallel circuit and two of the branch currents are 40 mA and 20 mA, the third branch current is ________.

40 A

If a lamp transforms 120 joules of energy into light and heat every 2 seconds, how much power does it use?

60 W

How much energy does a 6 V battery have when it stores 12 coulombs of charge? (V = W/Q)

72 joules

A generator converts electrical energy into mechanical energy.

FALSE

A parallel circuit can be easily identified because only one end of each component is connected to each other.

FALSE

If 50 Joules are used in ten seconds, the power will be 500 Watts.

FALSE

Which one of these statements is TRUE of Kirchhoffʹs voltage law (KVL)?

KVL works correctly with a clockwise or counter-clockwise loop direction.

A loop is a closed current path in a circuit.

TRUE

Kirchhoff's Current Law states that the sum of the currents into a junction must equal the sum of the currents out of that junction.

TRUE

The current that flows through series elements of a circuit is the same through each element.

TRUE

Which of the following describes two circuit elements that have two points in common?

They are considered to be in parallel.

In double-subscript notation, the voltage Vab is the same as

Va - Vb.

Which of the following is NOT a voltage source?

light bulb

Power as it is used in electric circuits can be best defined as:

the rate energy is used over time