Basic DC Electricity

Question 1

Definition of electricity?

Answer 1

Flow of electrons through simple materials and devices

Question 2

What is the outer electron shell of an atom called?

Answer 2

Valence shell

Question 3

Which direction do electrons flow in a circuit?

Answer 3

from negative to positive

Question 4

Define current?

Answer 4

The flow of electrons through a conductor, and is what does the WORK

Question 5

Define voltage?

Answer 5

The potential difference between positive and negative

Question 6

Define resistance?

Answer 6

The opposition to current flow, measured in Ohms

Question 7

Ohm’s Law

Answer 7

V = IxR , The current in a circuit is DIRECTLY proportional to the applied voltage and INVERSELY proportional to the circuit resistance

Question 8

What are the four requirements for a circuit?

Answer 8

1. Conductor
2. Load
3. Power Source
4. Switch

Question 9

What happens when two batteries are place in parallel?

Answer 9

Amperage (Current) is increased, Voltage stays the same

Question 10

What do capacitors do?

Answer 10

Store energy

Question 11

What happens when two batteries are placed in series?

Answer 11

Voltage is increased, amperage stays the same

Question 12

Explain voltage in a series circuit?

Answer 12

Voltage drops across each load

Question 13

Explain voltage in a parallel circuit?

Answer 13

Voltage remains the same across each branch of a parallel circuit

Question 14

The work in a circuit is performed by ?

Answer 14

Current

Question 15

What happens to current (amperage) in a parallel circuit?

Answer 15

Current is divided across each branch of the a parallel circuit, (relative to the resistance of each component)