Electronics

Question 1

Electrons

Answer 1

Negative charge

Question 2

Protons

Answer 2

Positive charge

Question 3

Neutrons

Answer 3

No charge

Question 4

Coulomb’s law

Answer 4

The force exerted between two charges is inversely proportional to the square of the distance between them

Question 5

Coulomb’s eq. (simplified)

Answer 5

force=1/(distance)^2

Question 6

Voltage

Answer 6

Electromotive force; volts

Question 7

Current

Answer 7

Movement of charge; amperes

Question 8

Ohms law

Answer 8

Voltage (V) is equal to the product of the current (I) and the resistance

Question 9

Ohm’s eq.

Answer 9

V=IR

Question 10

Resistance

Answer 10

The opposition to direct current flow

Question 11

Resistors in series eq.

Answer 11

R total = R1 + R2

Question 11

Impedence

Answer 11

opposition to alternating current flow

Question 12

Resistors in series (Voltage divider)

Answer 12

current is the same, voltage divides among the resistors

Question 13

Resistors in parallel (current divider)

Answer 13

Voltage is the same, current divides among the resistors

Question 14

Resistors in parallel eq.

Answer 14

1/R total = 1/R1 + 1/R2

Question 15

Capacitance

Answer 15

Ability to store charge; unit is Farads