Basic Circuit Concepts Part 1

Question 1

Charge Definition

Answer 1

A property of matter that causes it to experience a force in an electric field; measuring in coulombs (C)

Question 2

Electron Definition

Answer 2

A negatively charged subatomic particle

Question 3

Proton Definition

Answer 3

A positively charges subatomic particle, located in the nucleus

Question 4

Ion Definition

Answer 4

An atom or molecule that has a net charge due to the loss or gain of electrons

Question 5

Current Definition

Answer 5

The rate of flow of electric charge past a point, measured in amperes (A)

Question 6

Voltage Defintion

Answer 6

The potential difference between two points; the energy per unit charge, measured in volts

Question 7

Resistance Definition

Answer 7

A property that quantifies how much a component opposes the flow of current, measures in ohms

Question 8

Ohm’s Law Definition

Answer 8

A relationship between voltage, current and resistance
V = IR

Question 9

Nucleus Components

Answer 9

Protons and neutrons

Question 10

How are electrons bound to nucleus

Answer 10

Bound by electrostatic attraction

Question 11

What does Colombo’s law show?

Answer 11

Shows that more charge or closer distance produces a larger force

Question 12

Mega (prefix)

Answer 12

10^6; M

Question 13

Kilo (prefix)

Answer 13

10^3; k

Question 14

Milli (prefix)

Answer 14

10^-3; m

Question 15

Micro (prefix)

Answer 15

10^-6 (u)

Question 16

Multimeter

Answer 16

Measures voltage, current and resistance

Question 17

How would you measure voltage?

Answer 17

• Connect voltmeter (or multimeter) in parallel across the 2 points
• Don’t place meter in series for voltage measurements

Question 18

How would you measure current?

Answer 18

• Ammeter must be places in series with the circuit
• So current flow through meter