Electric Current and its Effects Test

Result

Electric Current and its Effects Test - 6

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Weekly Quiz Competition

Question 1
1 / -0

A straight line represents which electric component

A
Load

B
Resistor

C
Conducting wire

D
Cell

Solution

Electrical symbol of cell, resistor, conducting wire and cell are shown in the figure.
Thus a straight line in an electrical circuit represents a conducting wire.
Question 2
1 / -0

Which of the following is an advantage of using electrical symbol?

A
It makes the representation of electrical component easy.

B
It makes the circuit drawing easier.

C
It helps in solving the circuits.

D
All of the above.

Solution

The uses of electrical symbols are listed below:
1. It eases the representation of an electrical component.
2. It makes the circuit drawing easier and more compact.
3. It gives important insights into the circuits and increases the speed of solving electrical circuits.
Question 3
1 / -0

Given figure is a symbol of

A
Bulb

B
Battery

C
Switch

D
Fixed resistance

Solution

Electrical symbols of bulb, battery, switch and fixed resistance are shown in the figure.
Thus symbol shown in the question represents a switch. A switch is used to make or break a connection in the electrical circuit.
Option C
Question 4
1 / -0

Figure shows a

A
plug key

B
switch key

C
tapping key

D
none of the above

Solution

$$\textbf{Explanation:}$$ A switch is an electric component that opens or closes a circuit. We know that electricity can only pass across a circuit if it is closed. The switch is usually wired in series with the load it is attempting to control.
$$\textbf{Option B is correct}$$
Question 5
1 / -0

Which of the following is a symbol of tapping key.

A

B

C

D
All

Solution

Figure in option A represents a plug key, option B is the symbol of switch whereas figure in option C represents a tapping key.
Question 6
1 / -0

What does this symbol mean in electric circuits?

A
Rheostat

B
Battery

C
capacitor

D
Inductance

Solution

Rheostat is a variable resistor, which is used to control the flow of electric current by manually increasing or decreasing the resistance. The arrow sign indicates the variability.
Question 7
1 / -0

Which power supply can be used in electric bell

A
$$AC$$

B
$$DC$$

C
Can't be predicted

D
Both A and B

Solution

Electric bell works on the mechanism of electromagnets and for this, any type of power either AC or DC can be used.
An electric bell is a mechanical or electronic bell that functions by means of an electromagnet. When an electric current is applied, it produces a repetitive buzzing, clanging, or ringing sound.
Question 8
1 / -0

Which of the following symbol is used for a diode in circuits?

A

B

C

D

Solution

A diode has an anode on one side and a cathode on the other side and is represented by this diagram.

Answer-(C)
Question 9
1 / -0

Symbol of power source in electric circuit is-

A

B

C

D

Solution

The symbol of a power source has two lines - one shorter and the other one is longer. The shorter line represents the negative end and the longer line represents the positive end of the source.
Question 10
1 / -0

Which of the following symbols used for current generating source?

A

B

C

D
None of these

Solution

A is symbol of voltage source
B is a symbol used for current generating source.
And, C is a symbol of transformer.
Therefore, B is correct option.