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Year 10 electricity

Total questions: 52

Worksheet time: 1hrs 18mins

Name
Class
Date
1.
Analyse the circuit shown and identify which globe would never light up. 
a)
A
b)
B
c)
C
d)
D
2.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
3.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
4.
What is the unit of Current?
a)
Amps
b)
Watts
c)
Volts
d)
Joules
5.
What is the unit of voltage?
a)
Amps
b)
Watts
c)
Volts
d)
Joules
6.
If the current through the battery was 10A in this diagram. What would the current through each bulb be?
a)
10A
b)
5A
c)
20A
d)
0A
7.
If the voltage across the battery was 10V in this diagram. What would the voltage across each bulb be?
a)
10V
b)
5V
c)
20V
d)
0V
8.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
9.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
10.
What is shown in the circuit diagram?
a)
battery, 3 globes and a switch
b)
cell, 3 globes, open switch and wires
c)
cell, 3 resistors and switch
d)
battery, 3 globes, wires and open switch
11.

A parallel circuit... (select all correct answers)

a)

...can be compared to a racetrack

b)

...contains multiple paths for charge to travel

c)

...is commonly used in household wiring

d)

...has all components dependent on the others

12.

Electric current is created by...

a)

Moving electrons

b)

The sun

c)

Moving atoms

d)

Conductors

13.
What is Resistance?
a)
the degree to which a circuit component opposes the passage of an electric current, causing energy dissipation
b)
How hard the energy is pushed
c)
The amount of charges that pass by a given point per second
d)
None of the above
14.

the formula to find current when the values of V and R are known is

a)

I = V2R

b)

I = V/R

c)

I = R/V

d)

I=VR

15.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
16.

What happens to resistance when the length of the wire increases?

a)

Stays the same

b)

Increases

c)

Decreases

17.

Why should you switch off the power between taking readings?

a)

The wire will break

b)

The power will run out

c)

The wire will get hot

d)

To stop wasting energy

18.

What effect does a hotter temperature have on resistance?

a)

No effect

b)

Increases resistance

c)

Decreases resistance

d)

Stays the same

19.

What other factor of a wire could affect its resistance?

a)

Material its made of

b)

How shiny it is

c)

Colour

20.

How do you calculate current from voltage and resistance?

a)

Current = voltage x resistance

b)

Current = resistance x power

c)

Current = voltage ÷ resistance

d)

Current = resistance ÷ voltage

21.

What is the resistance if the current is 2A and the voltage is 10V?

a)

8 Ω

b)

20 Ω

c)

12 Ω

d)

5 Ω

22.
As resistors are added in series to a circuit, the total resistance will...
a)
increase
b)
decrease
c)
stay the same
23.
In a parallel circuit which of the following is the same value throughout the circuit?
a)
Voltage
b)
Current
c)
Resistance
d)
Charge
24.
Alpha particles.....
a)
a) are positively charged.
b)
b) consist of two protons and four neutrons.
c)
c) can penetrate any thickness of matter
d)
d) All of the above 
25.

When a nucleus undergoes gamma decay, the atomic number of the element....

a)

remains the same

b)

decreases by one.

c)

increases by one.

d)

increases by two.

26.
The type of radioactive particle that can be stopped by a sheet of paper is the ____.
a)
alpha particle
b)
beta particle
c)
gamma ray
d)
positron
27.
Two atoms of the same element but with different mass numbers are called________
a)
electrons
b)
isotopes
c)
ions
d)
reaction partners
28.

What do these isotopes of carbon all have in common?


126C, 136C, 146C

a)

they all have the same number of neutrons & mass number

b)

they all have the same atomic number and neutrons

c)

they all have the same atomic number and electrons

d)

they all have the same number of protons, atomic number, and mass number

29.

Which type of nuclear radiation is being emitted here?

a)

Alpha

b)

beta

c)

gamma

d)

none

30.
Positively charged particles that consist of two protons and two neutrons are called
a)
alpha particles
b)
beta particles
c)
gamma rays
d)
neutron emissions
31.
In order of most to least penetrating radiation we have
a)
Alpha , Beta,  Gamma
b)
Beta , Gamma , Alpha
c)
Gamma, Beta, Alpha
d)
Gamma, Alpha, Beta
32.

If we start off with element 5024X, and alpha decay occurs we get another element [Y] that looks like....

a)

5022Y

b)

4622Y

c)

4820Y

d)

5426Y

33.
Which type of nuclear radiation is being emitted here?
a)
alpha
b)
beta
c)
gamma
d)
none
34.

Identify the missing substance in each of the following nuclear reactions.

_____→13756 Ba + 0−1B

a)

13755Ba

b)

13757La

c)

13856Ba

d)

13755Cs

35.

Which of the following elements is formed when an alpha particle is emitted from 24395Am?

a)

Uranium

b)

Radium

c)

Plutonium

d)

Neptunium

36.
Why does the atomic number increase during beta decay?
a)
A neutron turns into a proton
b)
A proton turns into a neutron
37.
Which type of radioactive decay gives off energy only?
a)
alpha
b)
beta
c)
gamma
38.

Which of these is not a radioactive particle

a)

alpha

b)

beta

c)

delta

d)

gamma

39.
AC stands for ___.
a)
Alternating Current
b)
Attraction Connections
40.
Current that is used by most household appliances
a)
AC
b)
DC
c)
BC
d)
AC/DC
41.
Current from a battery is 
a)
AC
b)
DC
c)
BC
d)
AC/DC
42.
this is the symbol for a _____?
a)
switch
b)
light 
c)
battery
d)
wires
43.
This is the symbol for a ...
a)
Bulb
b)
Battery
c)
Horn
d)
Fuse
44.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
45.
The type of current where charges flow in one direction
a)
Direct Current
b)
Alternating Current
c)
Electron Flow
d)
Voltage
46.
What happens to the brightness of the light bulbs in a series circuit when you add more lights.
a)
Each bulb gets dimmer
b)
Each bulb remains the same
c)
Half of the bulbs get dimmer
d)
Each bulb gets brighter
47.
Why are humans conductors?
a)
Humans are made of mostly water.
b)
Humans have a ton of metal in their bodies.
c)
Humans conduct the railroad.
d)
Humans are great at the electric slide.
48.
What is Half-life?
a)
The amount of time it takes for some of the nuclei in a sample of the isotope to decay
b)
The amount of time it takes for half the electrons in a sample of the isotope to decay
c)
The amount of time it takes for half the nuclei in a sample of the isotope to decay
d)
the amount of time it takes to double the nuclei in a sample of the isotope to decay
49.
The half-life of Zn-71 is 2.4 minutes. If one had 100.0 g at the beginning, how many grams would be left after 7.2 minutes has elapsed?
a)
100.0g
b)
50.0g
c)
12.5g
d)
8.5g
50.
Barium-122 has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10 minutes to set up an experiment using barium-122, how much barium-122 will be left when the experiment begins?
a)
0.25g
b)
2.5g
c)
25g
d)
80g
51.
What is the half-life of iodine-131?
a)
32 days
b)
8 days
c)
16 days
d)
24 days
52.

What is the Half life of this isotope?

a)

5 seconds

b)

10 seconds

c)

15 seconds

d)

20 seconds

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