6th Grade > Physics
ELECTRICITY AND CIRCUITS MCQs
Total Questions : 50
| Page 3 of 5 pages
Answer: Option B. ->
False
:
B
:
B
Electric current is a flow of charges. A good conductor consists of many free electrons in it and allow the flow of electrons with less resistance. Jute string is a bad conductor of electricity. Hence, we cannot use it in electrical circuits.
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 A. ->
True
:
A
Electric current is a flow of charges. We know current flows from the positive terminal to the negative terminal of a cell. The direction of flow of current is opposite to the direction of flow of electrons. Hence, in a closed circuit, electrons flow from the negative terminal to the positive terminal of a cell.
:
A
Electric current is a flow of charges. We know current flows from the positive terminal to the negative terminal of a cell. The direction of flow of current is opposite to the direction of flow of electrons. Hence, in a closed circuit, electrons flow from the negative terminal to the positive terminal of a cell.
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 D. ->
the circuit is incomplete
:
D
:
D
A bulb with broken filament is called a fused bulb and it does not glow. If the filament of a bulb is broken, the circuit is incomplete. Thus, it restricts the flow of current.
Answer: Option B. ->
False
:
B
:
B
A human body can conduct electricity as it is composed largely of water and charged particles (ions). So we need to be careful while handling the electrical appliances, as we may get an electric shock.
Answer: Option B. ->
electric insulator
:
B
:
B
Insulators are poor conductors of electricity. Glass is an example of electric insulator because it does not contain free electrons and cannot conduct electricity.
Answer: Option A. ->
it acts as an insulator
:
A
:
A
An electrician uses rubber or plastic gloves while repairing an electric appliance because it is an insulator and saves him from all the electric shocks. Insulators do not allow electric current to pass through them.
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