Circuits And Electric Current Short Question With Answer: General Science Cadet College Test
Q.No.01: Define electricity.
Ans: The flow of electrons through a conductor provides electrical energy in the form of electric current. It is called electricity.
Q.No.02: What is electric current?
Ans: The flow of charges through a conductor is called electric current.
Q.No.03: What do you know about electric circuits?
Ans: An electric circuit is a complete path along which charges flow.
Q.No.04: What is a conductor?
Ans: The materials which allow electric current to pass through them are called conductors.
e.g., copper, silver etc.
e.g., copper, silver etc.
Q.No.05: Define an insulator?
Ans: The materials which do not conduct electricity are called insulators.
e.g., sand, wood etc.
e.g., sand, wood etc.
Q.No.06: How a series circuit is formed?
Ans: If all components in an electric circuit are connected one after another in a single loop, it is called a series circuit.
Q.No.07: Give one disadvantage of a series circuit?
Ans: There is only one path for current to flow. A break at any point will stop the flow of current in the whole circuit.
Q.No.08: How a parallel circuit is formed?
Ans: If the components of an electric circuit are connected in two or more loops, it is called a parallel circuit.
Q.No.09: Give an advantage of a parallel circuit.
Ans: There is more than one path for the current to flow. A break in any branch only stops current in that branch
Q.No.10: Define potential difference.
Ans: The difference in potential between two points in a circuit or a battery is called potential difference.
Q.No.11: What is the unit of electric current?
Ans: The unit of electric current is the ampere (A).
Q.No.12: What instrument is used to measure electric current?
Ans: An ammeter is used to measure electric current.
Q.No.13: What is the unit of potential difference?
Ans: The unit of potential difference is the volt (V).
Q.No.14: What instrument is used to measure potential difference?
Ans: A voltmeter is used to measure potential difference.
Q.No.15: What is electrical resistance?
Ans: Electrical resistance is the opposition to the flow of current in a conductor.
Q.No.16: What is the unit of electrical resistance?
Ans: The unit of electrical resistance is the ohm (Ω).
Q.No.17: Name one factor that affects electrical resistance.
Ans: The length of the conductor. Longer conductors have more resistance.
