Electricity and Magnetism Test

Result

Electricity and Magnetism Test - 1

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Good conductors have many loosely bound

A
atoms

B
molecules

C
protons

D
electrons

Solution

Free electrons promote the flow of electricity.
Question 2
1 / -0

The property of a material, when it opposes or limits the flow of electric current through it is called

A
potential difference

B
electric resistance

C
conductivity

D
power

Solution

The electrical resistance of an electrical conductor is a measure of the difficulty to pass an electric current through that conductor.
Question 3
1 / -0

Ampere-second stands for the unit of

A
power

B
energy

C
e.m.f.

D
electric charge

Solution

Ampere- Unit of current
Second= Unit of time
Current* time= Charge
Question 4
1 / -0

In a simple voltaic cell, the negative electrode is of

A
zinc

B
copper

C
carbon

D
silver

Solution

The zinc is the more reactive, and is the negative electrode, releasing electrons.
Question 5
1 / -0

The simplest way of maintaining a potential difference between the two ends of a conductor is

A
to connect it to a battery or dry cell

B
to bring the two ends of conductor near each other

C
to mark the two ends of conductor away from each other

D
none of these
Question 6
1 / -0

The net e.m.f. of a normal dry cell is

A
2 volt

B
1 volt

C
1.5 volt

D
3.0 volt

Solution

A common dry cell is the zinc–carbon battery, sometimes called the dry Leclanché cell, with a nominal voltage of 1.5 volts, the same as the alkaline battery (since both use the same zinc–manganese dioxide combination).
Question 7
1 / -0

Tungsten is mainly used for making filaments of electric bulbs because of its

A
low cost

B
high melting point

C
high electrical conductivity

D
low thermal conductivity

Solution

The filaments in bulbs have to withstand high temperatures; hence a substance with high melting point is needed.
Question 8
1 / -0

Coating of iron with zinc is known as

A
galvanization

B
electroplating

C
ionization

D
none of these

Solution

Galvanization ( as it is most commonly called in that industry) is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The most common method is hot-dip galvanizing, in which parts are submerged in a bath of molten zinc.
Question 9
1 / -0

When a current flowing through a resistance increases four times, the heat developed will increase

A
two times

B
four times

C
eight times

D
sixteen times

Solution

Energy = I²Rt
Question 10
1 / -0

Chemical identity of an atom can be changed by

A
changing the number of protons in an atom`s nucleus

B
changing the number of neutrons in an atom`s nucleus

C
changing the number of neutrons and protons in an atom`s nucleus

D
chemical identity cannot be changed

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Electricity and Magnetism Test - 1

Result

Electricity and Magnetism Test - 1

Score

-

Rank

-

SHARING IS CARING

Question 1

atoms

molecules

protons

electrons

Solution

Question 2

potential difference

electric resistance

conductivity

power

Solution

Question 3

power

energy

e.m.f.

electric charge

Solution

Question 4

zinc

copper

carbon

silver

Solution

Question 5

to connect it to a battery or dry cell

to bring the two ends of conductor near each other

to mark the two ends of conductor away from each other

none of these

Question 6

2 volt

1 volt

1.5 volt

3.0 volt

Solution

Question 7

low cost

high melting point

high electrical conductivity

low thermal conductivity

Solution

Question 8

galvanization

electroplating

ionization

none of these

Solution

Question 9

two times

four times

eight times

sixteen times

Solution

Question 10

changing the number of protons in an atom`s nucleus

changing the number of neutrons in an atom`s nucleus

changing the number of neutrons and protons in an atom`s nucleus

chemical identity cannot be changed

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.