Phase II Block 5 Circuits

Question 1

Voltage sources

Answer 1

Where power comes from

- Wall socket, batteries

Question 2

Loads

Answer 2

use voltage to do something

• Resistive - light bulb
• Capacitive - batteries
• Inductive - hot plate

Question 3

Swithes

Answer 3

Allow portions of the circuit to be connected and disconnected

• Open = off
• Closed = on

Question 4

Circuit Configurations

Series

Answer 4

Voltage adds up
Vtotal = V1 + V2
Batteries in series = twice brightness (not long brightness)

Resistance in series
resistance adds up; voltage to the first light bulb is high (brighter) than voltage to second lightbulb

Switches in series
Form AND gate
All must be closed for the circuit to work

Question 5

Circuit Configuration

Parallel

Answer 5

Voltage Sources in parallel
Vtotal= V1= V2

Resistance in parallel
Always reduces total circuit resistance

Switches in circuit
create an OR gate. Only one switch must be closed for the circuit to work