(A) Electric flux
(B) Electric intensity
(C) Electric potential
(D) Electric current
Tag: Physics Mcq Questions and Answers
Kirchhoff’s second rule (KVL) is related to:
(A) IR drops
(B) Battery emfs
(C) Junction voltages
(D) Both (a & b)
The amount of heat energy dissipated in a resistance is directly proportional to:
(A) The square of the current only
(B) The resistance of conductor only
(C) The time of current flow only
(D) The square of the current, resistance and time of current flow
N identical resistors each of resistance R are connected in parallel. The equivalent resistance of the combination will be:
(A) NR
(B) R/N
(C) N/R
(D) none of these
If a wire of resistance R is stretched to double its length, its resistance becomes:
(A) R/2
(B) 4R
(C) 2R
(D) R/4
The resistance of a conductor one meter in length and one square meter in area of cross-section is called is:
(A) Reactance
(B) Conductance
(C) Resistivity
(D) Conductivity
The SI unit of electromotive force is:
(A) Coulomb per second
(B) Joule per coulomb
(C) Coulomb per volt
(D) Volt per ampere
The electromotive force of a battery or cell is the voltage between its terminals when:
(A) The circuit is open
(B) The circuit is closed
(C) Its internal resistance is minimum
(D) Its internal resistance is maximum