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Test: Electric Current and Its Effects - Class 7 MCQ


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20 Questions MCQ Test - Test: Electric Current and Its Effects

Test: Electric Current and Its Effects for Class 7 2024 is part of Class 7 preparation. The Test: Electric Current and Its Effects questions and answers have been prepared according to the Class 7 exam syllabus.The Test: Electric Current and Its Effects MCQs are made for Class 7 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Electric Current and Its Effects below.
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Test: Electric Current and Its Effects - Question 1

Which of the following is not a characteristic of a good conductor of electricity?

Detailed Solution for Test: Electric Current and Its Effects - Question 1

A good conductor of electricity should have low resistance and the ability to carry electric current easily.

Test: Electric Current and Its Effects - Question 2

Which of the following is not a mode of transportation in plants?

Detailed Solution for Test: Electric Current and Its Effects - Question 2

Diffusion, transpiration, and osmosis are modes of transportation in plants, while circulation is not.

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Test: Electric Current and Its Effects - Question 3

Which of the following is an example of a plant tissue that transports water and minerals?

Detailed Solution for Test: Electric Current and Its Effects - Question 3

Xylem is a specialized plant tissue that transports water and minerals from the roots to the leaves.

Test: Electric Current and Its Effects - Question 4

Which of the following is the main function of red blood cells in animals?

Detailed Solution for Test: Electric Current and Its Effects - Question 4

Red blood cells contain a protein called hemoglobin which binds to oxygen and transports it throughout the body.

Test: Electric Current and Its Effects - Question 5

Which of the following is an example of an electrical conductor?

Detailed Solution for Test: Electric Current and Its Effects - Question 5

Copper is a good conductor of electricity due to its ability to easily transfer electrons.

Test: Electric Current and Its Effects - Question 6

What is the purpose of an electric circuit diagram?

Detailed Solution for Test: Electric Current and Its Effects - Question 6

An electric circuit diagram is a visual representation of an electric circuit that shows the flow of electric current through the various components.

Test: Electric Current and Its Effects - Question 7

Which of the following is an example of a non-renewable source of energy?

Detailed Solution for Test: Electric Current and Its Effects - Question 7

Fossil fuels such as coal, oil, and natural gas are finite resources that take millions of years to form and are being depleted at a faster rate than they are being replenished.

Test: Electric Current and Its Effects - Question 8

What is the heating effect of electric current?

Detailed Solution for Test: Electric Current and Its Effects - Question 8

The heating effect of electric current is the ability of electric current to produce heat when it flows through a conductor.

Test: Electric Current and Its Effects - Question 9

What is an electric fuse?

Detailed Solution for Test: Electric Current and Its Effects - Question 9

An electric fuse is a safety device that is designed to break the circuit if the current flowing through it exceeds a certain level.

Test: Electric Current and Its Effects - Question 10

What is the magnetic effect of electric current?

Detailed Solution for Test: Electric Current and Its Effects - Question 10

The magnetic effect of electric current is the ability of electric current to produce a magnetic field when it flows through a conductor.

Test: Electric Current and Its Effects - Question 11

What is an electromagnet?

Detailed Solution for Test: Electric Current and Its Effects - Question 11

An electromagnet is a magnet that is created by passing an electric current through a coil of wire. It can be turned on and off by controlling the flow of electric current.

Test: Electric Current and Its Effects - Question 12

What is an electric bell?

Detailed Solution for Test: Electric Current and Its Effects - Question 12

An electric bell is a device that produces sound when an electric current flows through it. It typically consists of an electromagnet and a metal clapper that strikes a bell or gong when the electromagnet is activated.

Test: Electric Current and Its Effects - Question 13

Which of the following is an example of an insulator?

Detailed Solution for Test: Electric Current and Its Effects - Question 13

Insulators are materials that do not conduct electricity well. Rubber is an example of an insulator because it does not allow electric current to flow through it easily.

Test: Electric Current and Its Effects - Question 14

What is the function of the phloem in plants?

Detailed Solution for Test: Electric Current and Its Effects - Question 14

Phloem is a specialized plant tissue that transports sugars and other organic compounds from the leaves to the rest of the plant.

Test: Electric Current and Its Effects - Question 15

What is the difference between a series circuit and a parallel circuit?

Detailed Solution for Test: Electric Current and Its Effects - Question 15

In a series circuit, all the components are connected in a single loop, while in a parallel circuit, the components are connected in separate branches.

Test: Electric Current and Its Effects - Question 16

What is the function of the circulatory system in animals?

Detailed Solution for Test: Electric Current and Its Effects - Question 16

The circulatory system is responsible for transporting nutrients, oxygen, and waste products throughout the body, as well as regulating body temperature and maintaining fluid balance.

Test: Electric Current and Its Effects - Question 17

What is the difference between a permanent magnet and an electromagnet?

Detailed Solution for Test: Electric Current and Its Effects - Question 17

A permanent magnet is a material that is always magnetic, while an electromagnet is a magnet that is created by passing an electric current through a coil of wire.

Test: Electric Current and Its Effects - Question 18

Which of the following is an example of a renewable source of energy?

Detailed Solution for Test: Electric Current and Its Effects - Question 18

Renewable sources of energy are those that can be replenished naturally, such as solar power, wind power, and hydropower.

Test: Electric Current and Its Effects - Question 19

What is the function of the nervous system in animals?

Detailed Solution for Test: Electric Current and Its Effects - Question 19

The nervous system is responsible for controlling and coordinating bodily functions, including movement, sensation, and thought.

Test: Electric Current and Its Effects - Question 20

What is the difference between AC current and DC current?

Detailed Solution for Test: Electric Current and Its Effects - Question 20

AC (alternating current) is a type of electric current that changes direction periodically, while DC (direct current) flows in one direction only.

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