WorksheetsElectricity
Total questions: 15
Worksheet time: 16mins
A form of electricity where the flow of current is always in the same direction:
alternating current
direct current
power
voltage
The force which opposes and reduces the flow of electrical current is recognized as ________.
frequency
electromagnetism
power
resistance
Which of the following is the best conductor of electricity?
Silver
Gold
Aluminum
Copper
A process in splitting the atom of uranium is called ________.
fusion
fission
tension
friction
A process by joining hydrogen atoms which causes heat hotter than the sun is called ________.
fusion
fission
tension
friction
Which transforms heat energy to electric energy?
Generator
Battery
Thermocouple
Transformers
Which is the kinetic energy of falling water?
Solar energy
Hydro energy
Thermo energy
Mechanical energy
Which is a solar collector that is capable of producing voltage when exposed to radiant energy (sunlight)?
Photoemission system
Photovoltaic system
Solar light
Photoelectric
Energy derived or extracted from the internal heat of the earth is called ________.
chemical
thermal
volcanic
geothermal
Which refers to the extraction of electrons from a substance by sunlight on incident electromagnetic radiation?
Photoelectric effect
Photovoltaic effect
Photoemission
Electron microscopy
Which statement is TRUE?
Long wire has lesser resistance.
Bigger size of wire has higher resistance.
Bigger size of wire has lower resistance.
Short wire has higher resistance.
Which is used to change mechanical energy into electrical energy?
Generator
Dry cell
Circuit
Battery
The resistance of an electrical wire is inversely proportional to its ________.
length
material
temperature
cross sectional area
What quality pushes electrons to move?
frequency
wattage
voltage
resistance
What is the unit for current?
Volt
Ohm
Electron
Amp
