circuits

Question 1

in a series circuit, current is __ throughout the components

Answer 1

the same

Question 2

if one part breaks in a series circuit,

Answer 2

then so do the others

Question 3

in parallel, the voltage is

Answer 3

the same for each component (so if power pack is 6V, each component has 6V)

Question 4

is series, voltage is

Answer 4

shared across the components

Question 5

parallel circuits are used for

Answer 5

home lighting as they’re reliable and have constant brightness

Question 6

in a series circuit, current is

Answer 6

the same everywhere

Question 7

in series, the more resistors, the __ the current

Answer 7

lower

Question 8

for a light dependant resistor, the more light, (what happens to resistance?)

Answer 8

lower resistance

Question 9

thermistor, more heat = ___ resistance

Answer 9

lower

Question 10

current is

Answer 10

the rate of flow of charge

Question 11

in metals, what is electric current caused by?

Answer 11

by electrons moving through the metal’s lattice.

Question 12

voltage

Answer 12

Voltage is energy transferred per unit charge

Question 13

advantages of series (3)

Answer 13

Simple to design and build

Uses less wiring

Current is the same everywhere, easy to measure

Question 14

disadvantages of series

Answer 14

If one component fails, the entire circuit stops

Voltage is divided among components, so devices may be dimmer or weaker

Adding more components increases total resistance and reduces current

Question 15

advantages of parallel (3)

Answer 15

Each component gets full voltage, so devices work at full brightness or power

If one component fails, others still work

Components can be controlled independently

Question 16

disadvantages of parallel (3)

Answer 16

More wiring is needed, making the circuit more complex

Current is divided between branches, so total current is higher (may require thicker wires)

Can be more expensive to install and maintain