Easy
996 likes
Question
What is DC?
WBBSE
Class X
Physical Science
Current Electricity
01 Mark
2023
Answer
DC (Direct Current) is a type of electric current that flows in a single, constant direction. In a DC circuit, the electric charge (current) does not change direction.
Related Questions
More WBBSE Easy level questions
1/12
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
714
Q.
Match the Right column with the Left column
A.
2.11.1 Acetic acid → (b) Weak electrolyte 2.11.2 Glass → (a) non-conductor...
View Question
Easy
842
Q.
‘Kilowatt-hour’ is the unit of which physical quantity?
A.
'Kilowatt-hour' is the unit of energy.
View Question
Easy
955
Q.
What is the unit of electrical conductance?
A.
The unit of electrical conductance is the Siemens (S). OR Fuse wire...
View Question
Easy
792
Q.
What is the SI unit of electric charge?
A.
The SI unit of electric charge is the coulomb (C).
View Question
Easy
970
Q.
If the resistance (R) of the conductor and time of flow of current in the...
A.
(c) H ∝ I² Explanation: According to Joule's law of heating, the...
View Question
Easy
787
Q.
The charge of an electron is
A.
(b) -1.6 × 10⁻¹⁹ C Explanation: The charge of an electron is...
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
1
Q.
If 5 ampere current is conducted for 30 seconds through any conductor then the total...
A.
(b) 150 coulomb Explanation The total charge (Q) is given by Q...
View Question
Easy
1
Q.
An electric current is flowing through a wire. If in this situation the wire is...
A.
(b) will decrease Explanation When the wire is stretched, its length increases...
View Question