What are incandescent bulbs?

Bulbs with light emitting diodes

What is an electromagnet based on ?

Magnetic effect of electric current

Electro-chemical effect of current

A circuit made of wires, a lamp, a switch, and a cell is shown at the right. What change is needed for the lamp to glow?

The wire needs to be connected to the bottom of the cell.

Which property of wood makes it a good material for the handle on a cooking tool?

Wood does not conduct electricity well.

How is electric potential measured

It cannot be measured= infinity

Boojho made an electromagnet by winding 50 turns of wire over an iron screw. Paheli also made an electromagnet by winding 100 turns over a similar iron screw. Which electro magnet will attract more pins? Give reason

Paheli-Because more number of turns has more electromagnet power

Boojho-Because less number of turns has more electromagnet power

Paheli does not have a night lamp in her room. She covered the bulb of her room with a towel in the night to get dim light. Has she taken the right step? Give one reason to justify your answer

No,Towel may be heated and burn

Yes,It will make the room more brighter

Yes,Good students always do such practicals

Which of the following precautions need not be taken while using electric gadgets/appliances/circuit?

We should never turn the switch in ON position

We should never touch a lighted electric bulb connected to the mains.

We should never experiment with the electric supply from the mains or a generator or an inverter.

We should never use just any wire or strip of metal in place of a fuse.

What is your inference from the diagram

Strength of magnetic field depend on number of coils

Strength of magnetic field depend on current

Strengh of magnetic field depend on type of core

How are electromagnets different from magnets?

you can turn an electromagnet on/off

magnets have a North and South pole

Electromagnets are useful in industry such as a junk yard because they

have strong north and south poles

Electric current and its effect

Quiz

•

Science

•

7th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-PS2-5, MS-PS2-3, 4-PS3-2

+2

Standards-aligned

Dixita Patel

Used 142+ times

FREE Resource

34 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

1.An electric current can produce

heating effect only.

chemical effect only.

magnetic effect only.

chemical, heating, and magnetic effects.

Which one of the following solutions will not conduct electricity?

lemon juice

vinegar

tap water

vegetable oil

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Small amount of a mineral salt present naturally in water makes it a______________ of electricity.

insulator

conductor

both a and b

none of these

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An electrolyte is

a metal

a solution

a liquid that conducts current

all of above

Flow of electron is called

Electroplating

Electric current

Electrodes

Electrolyte

What is this?

Battery

Electromagnet

Soleoid

Solenoid

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What does a fuse do?

Melt down for no reason.

Stop electricity

Stop excessive electricity

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever

or continue with

Microsoft

Apple

Others

Already have an account?

Similar Resources on Wayground

38 questions

Genetics and Punnett Squares

Quiz

•

7th - 8th Grade

38 questions

Heat transfer

Quiz

•

7th Grade

32 questions

Light Technology

Quiz

•

7th - 9th Grade

33 questions

Life Sciences 8 Midterm Review

Quiz

•

6th - 8th Grade

32 questions

Final Review 7th Science

Quiz

•

7th Grade

32 questions

Brainpop: Simple Machines

Quiz

•

6th - 8th Grade

30 questions

Geosphere. Minerals and rocks

Quiz

•

7th Grade

36 questions

CUA 4 Review

Quiz

•

7th Grade

Popular Resources on Wayground

15 questions

Fractions on a Number Line

Quiz

•

3rd Grade

20 questions

Equivalent Fractions

Quiz

•

3rd Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

54 questions

Analyzing Line Graphs & Tables

Quiz

•

4th Grade

$fractions$

22 questions

fractions

Quiz

•

3rd Grade

20 questions

Main Idea and Details

Quiz

•

5th Grade

20 questions

Context Clues

Quiz

•

6th Grade

15 questions

Equivalent Fractions

Quiz

•

4th Grade

Discover more resources for Science

20 questions

Cell Organelles and Functions

Quiz

•

6th - 8th Grade

33 questions

Grade 6 Quarter 3 PMA 5 Review

Quiz

•

6th - 8th Grade

12 questions

Ecological Succession

Quiz

•

7th Grade

10 questions

Exploring the Rock Cycle: Types and Formation

Interactive video

•

6th - 8th Grade

10 questions

Exploring the Layers of the Earth

Interactive video

•

6th - 10th Grade

10 questions

Exploring the Rock Cycle

Interactive video

•

6th - 8th Grade

12 questions

Photosynthesis

Quiz

•

7th Grade

10 questions

Exploring Weathering, Erosion, and Deposition Processes

Interactive video

•

6th - 10th Grade

Electric current and its effect

34 questions

1.An electric current can produce

Which one of the following solutions will not conduct electricity?

Small amount of a mineral salt present naturally in water makes it a______________ of electricity.

An electrolyte is

Flow of electron is called

What is this?

What does a fuse do?

What are incandescent bulbs?

What is the full form of the ISI mark?

Who developed the ISI mark?

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science