Module 15: Electric Circuits

Question 1

Define Electric Current

Answer 1

The amount of charge that travels pas a fixed point in an electric circuit each second.

Question 2

Define Conventional Current

Answer 2

Current that flows from the positive side of the battery to the negative side.

Question 3

Define Resistance

Answer 3

The ability of a material to impede the flow of charge when it is subject to a potential difference.

Question 4

Define Open Circuit

Answer 4

A circuit that does not have a complete connection between the two sides of a battery. As a result, current does not flow.

Question 5

What is the Electric Current equation?

Answer 5

I = ΔQ / Δt
I —> Current (amps) (Coulombs / sec = Ampere)
ΔQ —> Total charge traveling pas a given point in the circuit
Δt —> The time it takes for the charge to travel

Question 6

What is Ohm’s Law?

Answer 6

V = IR
V —> Potential Difference (volt)
I —> Current (amp)
R —> Conductor’s resistance (ohm Ω ) (Volt / Amp = Ω)

Question 7

What is the Power Equation?

Answer 7

P = IV
P —> Power (Watts)
I —> Current (amps)
V —> Electric Potential (volts)

Question 8

What is the OTHER Power Equation?

Answer 8

P = I2 * R
P —> Power (Watts)
I —> Current (amp)
R —> Resistance (Ohm)

Question 9

What are the Resistance equations?

Answer 9

Reffective = R1 + R2 + R3 + … (for all resistors in series)

1/Reffective = 1/R1 + 1/R2 1/R3 + … (for all resistors in series)