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WorksheetsNSD 61 9 Science Unit D Electricity PAT PREP
Total questions: 11
Worksheet time: 18mins
Which of the following changes to the cell shown above would result in voltage being produced?
Reversing the leads on the voltmeter
Using a greater volume of sulfuric acid
Replacing 5% sulfuric acid with 20% sulfuric acid
Changing one of the electrodes to a zinc electrode
The energy transformation that occurs in the circuit above when the switch is closed is
chemical energy → electrical energy → light and thermal energy
light energy → electrical energy → chemical and thermal energy
thermal energy → chemical energy → electrical and light energy
chemical energy → thermal energy → electrical and light energy
When a switch, a variable resistor, a light bulb, and a motor are connected the circuit will operate as follows:see diagram.
• The switch will control both the motor and the light bulb.
• The user will be able to control the brightness of the light bulb.
Which of the following matches the electrical components to their corresponding locations in the circuit described above?
(W) =variable resistor (X)= Light Bulb (Y)= Switch (Z)= Motor
(W)= variable resistor -(X)= Motor (Y)= Switch -(Z)= Light Bulb
(W)= Switch (X)= Light Bulb (Y)= Variable Resistor (Z)= Motor
(W)= Switch-(X)= Motor(Y)= Variable Resistor (Z)= Light Bulb
Jake needs to repair a car stereo system. The system contains a stereo and a fuse that are connected in series and two speakers that are connected in parallel.
Which of the following diagrams represents the car stereo system described above?
A Grade 9 student used an ammeter to measure the current of a circuit consisting of a bulb, an ammeter, and a variety of voltages. Based on the information on the graph and table if a 10.5 V battery were used, then the expected ammeter reading would be
4.6 mA
5.1 mA
5.6 mA
6.6 mA
A student is testing the conductivity of 4 different substances. He uses a 2.5 V battery and records the current in the circuit in each of the 4 substances. The chart below indicates the current measured.
Which substance is most likely an insulator?
Substance Q
Substance R
Substance S
Substance T
Calculate power for the device given above. Hint (P =I x V) I= amperage
16 W
25 W
100 w
400 W
The most efficient system shown has an efficiency of (a) %.
Which of the following actions will not reduce waste of energy in a home?
Replacing single-pane windows with double-pane windows
Installing a programmable thermostat to control a furnace
Wrapping an insulating blanket around a hot water tank
Installing an air conditioner to reduce temperatures
Which of the following two methods of power generation provide the least consistent energy?
Wind and solar power
Hydro and wind power
Nuclear and solar power
Hydro and nuclear power
The advantages and disadvantages of a particular energy source are shown in the following table. The energy source being described in the table above is most likely
solar
biomass
geothermal
natural gas
