WorksheetsMultiple Choice Questions on Electrical Components
Total questions: 28
Worksheet time: 14mins
What is a device that stores energy and uses chemical reactions to make a current flow in a complete circuit?
Battery
Electrode
Cell
LED
What is made up of one or more cells joined together?
Electrolyte
Circuit
Battery
Electrode
What must be complete (closed) in order to work and contains a power supply and components?
Battery
Circuit
LED
Electrolyte
What are the two parts of a cell that are made of different materials and have positive and negative charges?
LED
Circuit
Electrodes
Electrolytes
What is the liquid in a cell that conducts an electric current?
Electrolyte
LED
Circuit
Electrode
What electrical component produces light when an electric current flows through in one direction?
Battery
LED
Electrolyte
Circuit
Who developed the first working battery?
Michael Faraday
Alessandro Volta
Thomas Edison
Nikola Tesla
What was the name of the first battery?
Lead-acid battery
Lithium-ion battery
What is the main component of a battery that stores energy?
Electrolyte
Electrode
Voltaic pile
Dry cell
What is the main function of an electrolyte in a battery?
To store electricity
To conduct charged particles between electrodes
To generate heat
To prevent corrosion
Which of the following materials can be used as an electrode?
Plastic
Glass
Metal
Paper
What type of battery is commonly used in mobile phones?
Lead-acid
Nickel-cadmium
Lithium-ion
Alkaline
Batteries store electricity.
True
False
Lemon juice can be used as an electrolyte in a simple battery.
True
False
A circuit must be complete for a battery to work.
True
False
Batteries never run out of energy; they can last forever.
True
False
Using more cells in a battery increases the potential difference (voltage).
True
False
What happens to the voltage when cells are connected in series in a battery?
It decreases
It remains the same
It increases
It fluctuates
Which part of a battery is responsible for the flow of electrons?
Separator
Insulator
Electrode
Electrolyte
What is the primary purpose of a separator in a battery?
To increase voltage
To prevent short circuits
To conduct electricity
To store energy
Jake’s flashlight stopped working during a camping trip. When he opened it, he noticed that the battery was corroded. What was the most likely reason the flashlight did not work?
The LED bulb was broken.
The circuit was incomplete due to a damaged battery cell.
. The switch was stuck in the off position
The flashlight needed to be shaken to work.
Emily and her classmates built a simple circuit to power an LED light, but it did not turn on at first. What was the most likely reason for this?
The battery was too powerful
The LED was faulty.
A wire was loose, preventing a complete circuit.
. The circuit needed more wires to work.
Leo learns that a battery contains two electrodes and an electrolyte. What is the main function of the electrolyte in a battery?
To store electrical energy for later use.
To help conduct electricity by allowing ions to move between electrodes
To act as an insulator and prevent current from flowing.
To generate light when a circuit is completed.
Sarah’s battery-powered toy car stopped working. How will you make the car work again?
Unblock the wheels.
Check if any cell is missing because the circuit needs a complete connection for electricity to flow.
The toy car needs more weight to function properly.
The battery compartment needs to be cleaned.
A small village in a remote area lacks access to a power grid. To solve this, engineers install solar panels and wind turbines to generate electricity. However, they notice that on cloudy days and windless nights, power shortages occur. How will they solve this problem?
To generate more electricity during the day.
To replace the need for solar panels and wind turbines.
To store excess energy for use when solar and wind power are unavailable.
To increase the speed of electricity flow in the village.
David installed a home battery storage system along with solar panels to charge his electric car. Why did he need the battery storage system?
To store excess energy for charging his car on rainy or cloudy days.
To make the solar panels more efficient.
To increase the speed of charging the car.
To reduce the carbon footprint of the solar panels.
A coastal town frequently experiences hurricanes, which sometimes knock out the power grid. To prepare for emergencies, the town installs solar panels and wind turbines along with battery storage systems in critical locations like hospitals and emergency shelters.Why?
To generate more electricity during storms.
To power backup diesel generators during emergencies.
To provide energy for non-essential services during storms.
When a storm hits and the grid goes down, the stored energy keeps essential services running, saving lives and reducing reliance on backup diesel generators.
A manufacturing company wants to cut costs and reduce its environmental impact. It installs solar panels on its roof and wind turbines near its facility to generate electricity. However, since the factory operates 24/7, it needs power even when the sun isn’t shining or the wind isn’t blowing. What can they do?
Power backup diesel generators during emergencies.
Make the wind turbines and solar panels more efficient.
Decrease energy consumption.
Invest in industrial-scale battery storage, ensuring that renewable energy can be used anytime, reducing dependence on fossil fuels.
