dynamic electricity: circuits

Question 1

what’s electricity

Answer 1

electrical charges in motion

Question 2

what’s electric current

Answer 2

flow of negative charge carried by electrons

Question 3

what’s an electric circuit

Answer 3

a network in which electrical charges can flow continuously in a loop

Question 4

what’s current intensity

Answer 4

the number of charges that flow past a given point in an electrical circuit every second

Question 5

what’s the unit for current intensity

Answer 5

I: ampere (A)

Question 6

what’s an ammeter

Answer 6

measures the current (I in amps) flowing in through the circuit

Question 7

where is the ammeter always connected

Answer 7

in the circuit

Question 8

what’s the symbol for ammeter

Answer 8

A

Question 9

what’s the potential difference

Answer 9

• the amount of energy transferred between points in a vertical circuit (volts)
• the push needed to make the current flow

Question 10

what’s a voltmeter

Answer 10

measures the potential difference between 2 points, how much that “push” has changed

Question 11

what is the voltmeter always connected to

Answer 11

outside the circuit

Question 12

what’s happens to the flow when the switch is closed

Answer 12

current flows

Question 13

what’s happens to the current when the switch is open

Answer 13

current does not flow

Question 14

what’s the electrical resistance

Answer 14

the ability of a material to slow down or resist the flow or electric current

Question 15

what’s the unit for the resistor

Answer 15

ohms

Question 16

what are the 2 types of resistors

Answer 16

• component that acts to reduce current flow to lower voltage in circuits
• complement that transforms electrical energy into heat, light, sound or motion (light bulbs, motors, speakers)

Question 17

how is the size of restriction found

Answer 17

dividing the pressure applied to circuit by the flow rate (voltage/amperage)

Question 18

what’s the ohms law

Answer 18

states that for a given resistance, the potential difference in a circuit is directly proportional to the current intensity

Question 19

what’s the formula to find the voltage

Answer 19

V= R•I

Question 20

what’s a series circuit

Answer 20

circuit with only 1 loop

Question 21

what’s a parallel circuit

Answer 21

circuit with 2 or more loops

Question 22

what’s the formula for power

Answer 22

Pe= VI

Question 23

what’s the formula for electrical energy

Answer 23

E=Pe🔺T

Question 24

what can volts be referred to as

Answer 24

potential difference

Question 25

what can amps be referred to as

Answer 25

current intensity