Moderate
881 likes
Question
What is the importance of insulators in household wiring?
WBBSE
Class X
Physical Science
Current Electricity
02 Mark
2023
2024
Answer
Importance of Insulators in Household Wiring:
- Safety: Prevents electric shock.
- Prevents Short Circuits: Avoids electrical fires.
- Efficiency: Reduces energy loss.
- Durability: Protects against moisture and corrosion.
Related Questions
More WBBSE Moderate level questions
1/12
Moderate
924
Q.
Write one characteristic of each of electrical heater wire and fuse wire.
A.
Electrical Heater Wire: Has a high resistance and High Melting Point. Fuse...
View Question
Moderate
534
Q.
Write Faraday’s laws of electromagnetic induction. Mention one advantage of using a LED lamp over...
A.
Faraday's law of electromagnetic induction: Whenever there is a change in magnetic...
View Question
Moderate
769
Q.
If the same potential difference is applied between the two ends of iron and copper...
A.
No. For the same potential difference (V), length (L), and cross-section (A),...
View Question
Moderate
956
Q.
If a current of 0.2 ampere flows through a conductor of resistance 40 ohm, what...
A.
d. 8 volts Explanation: Current (I) = 0.2 A Resistence (R) =...
View Question
Easy
657
Q.
Establish the relationship between internal resistance and EMF of an electric cell.
A.
Current (I) = Current (I) = ∴ E = I (R +...
View Question
Moderate
Q.
A thin wire of resistance 4 Ω is bent to form a circle. Find the...
A.
Resistance of the complete wire = 4 Ω The wire is bent...
View Question
Moderate
937
Q.
If 12 C of charge flows through a conductor for 2 minutes, the electric current...
A.
(b) 0.1 amperes Explanation: Q = 12 C (charge) t = 2...
View Question
Easy
813
Q.
Write down the difference between dynamo and electric motor. What is earthing?
A.
Difference between Dynamo and Electric Motor: Feature Dynamo Electric Motor Function Converts...
View Question
Hard
885
Q.
The equivalent resistances of two conductors are 9 Ω and 2 Ω when they are...
A.
For Series: R1 + R2 = 9 or, R1 = 9 -...
View Question
Easy
730
Q.
By which rule is the direction of rotation of Barlow’s wheel determined?
A.
The direction of rotation of Barlow's wheel is determined by Fleming's Left-Hand...
View Question
Easy
959
Q.
What would be the equivalent resistance of a circuit containing resistances of 6 Ω and...
A.
First, calculate the equivalent resistance of the two resistors in parallel (6...
View Question
Easy
996
Q.
What is DC?
A.
DC (Direct Current) is a type of electric current that flows in...
View Question