12th Grade > Physics
CURRENT ELECTRICITY MCQs
Electricity And Circuits
Total Questions : 60
| Page 5 of 6 pages
Answer: Option A. -> True
:
A
Electrical insulators arematerials which donot have free electrons in them and thereby do not allowelectric current to flow through them. For example, wood, plastic, etc.
:
A
Electrical insulators arematerials which donot have free electrons in them and thereby do not allowelectric current to flow through them. For example, wood, plastic, etc.
Answer: Option B. -> False
:
B
Energy is the ability to do work. Electricity is one of the forms ofenergyresulting from the flow of electric charges. With the help of electricity, we can do many things like operate machines, lightbulbs, fans etc.
:
B
Energy is the ability to do work. Electricity is one of the forms ofenergyresulting from the flow of electric charges. With the help of electricity, we can do many things like operate machines, lightbulbs, fans etc.
Answer: Option B. -> two
:
B
There are two terminals in a battery. Battery terminals are the electrical contacts used to connect a load (for example, a bulb) to the battery. Number of terminals in a battery is independent of the number of cells used to make the battery.
:
B
There are two terminals in a battery. Battery terminals are the electrical contacts used to connect a load (for example, a bulb) to the battery. Number of terminals in a battery is independent of the number of cells used to make the battery.
Answer: Option A. -> the positive terminal to the negative terminal
:
A
In an electric circuit, the current flows from the positive terminal to thenegative terminal of the cell. The image below gives the direction of current, where 'I' denotes the current.The direction of flow of electrons is opposite to the direction of flow of current.
:
A
In an electric circuit, the current flows from the positive terminal to thenegative terminal of the cell. The image below gives the direction of current, where 'I' denotes the current.The direction of flow of electrons is opposite to the direction of flow of current.
Answer: Option B. -> two
:
B
An electrical component requires some points of connection to external circuits so that a closed path can be formed. An electric bulb also has two terminals to facilitate connections.
:
B
An electrical component requires some points of connection to external circuits so that a closed path can be formed. An electric bulb also has two terminals to facilitate connections.
Answer: Option A. -> True
:
A
An electric cell converts chemical energy into electrical energy. When the chemicals in a cell get used up, it stops working, as it has no more chemical energy to be transformed into electrical energy.
:
A
An electric cell converts chemical energy into electrical energy. When the chemicals in a cell get used up, it stops working, as it has no more chemical energy to be transformed into electrical energy.
Answer: Option B. -> electric insulator
:
B
Insulators are poorconductors of electricity. Glass is an example of electric insulatorbecause it does not contain free electrons and cannot conduct electricity.
:
B
Insulators are poorconductors of electricity. Glass is an example of electric insulatorbecause it does not contain free electrons and cannot conduct electricity.
Answer: Option D. -> the circuit is incomplete
:
D
A bulb with broken filament is called a fused bulb andit does not glow. If the filament of abulb is broken,the circuit is incomplete. Thus, itrestricts the flow of current.
:
D
A bulb with broken filament is called a fused bulb andit does not glow. If the filament of abulb is broken,the circuit is incomplete. Thus, itrestricts the flow of current.
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