Q). Which of the following molecules in Atmosphere are responsible for blue colour of sky?
A) H2, Cl2
B) He, H2
C) CO, SO2
D) N2, O2
Q). Light is a/an
A) longitudinal wave
B) stationary wave
C) electromagnetic wave
D) None of the above
Q). Which of the following is true for conductor-like metals according to Lorentz-Drude theory?
A) Negative ions are fixed
B) Positive ions move
C) Positive ions are fixed
D) None of the above
Q). The SI unit of potential difference is
A) coulomb
B) volt
C) ampere
D) None of the above
Q). In case of non-ohmic materials, the V-I graph is
A) 
B) 
C) 
D) 
Q). The resistance of conductor depends on
A) length
B) cross sectional area
C) temperature
D) all of the above
Q). Two resistors are connected in____ . Then same current flows through two resistors.
A) series
B) parallel
C) series and parallel
D) None of the above
Q). Three resistors, 2 ohm, 3 ohm and R ohm are connected in series to a battery of voltage 20 V. If the current through the circuit is 1 ampere, then the value of R is _______ Ohm.
A) 5
B) 10
C) 15
D) 25
Q). Apply Kirchhoff’s junction law and find i3 value of the following figure
A) 19 A
B) 5 A
C) 2 A
D) 1 A
Q). Which of the following is correct regarding electricity?
A) P = 
B) P = 
C) P = 
D) P = VIR