111. Electric flux linked with a surface will be maximum when____________?
A. The surface is held parallel to the electric field
B. The surface is held perpendicular to the electric field
C. The surface makes an angle of 45°with the field
D. All of the above

112. An electric field can deflect_______________?
A. Neutrons
B. X-rays
C. Both glass rod and silk acquire a negative charge
D. None

113. Two charges are placed at a certain distance. If the magnitude of each charge is doubled the force will become_____________?
A. 1/4th of its original value
B. 1/8th of its original value
C. 4 times of its original value
D. 8 times of its original value

114. The electric charge of 100 °C is 13cm apart from another charge 16.9°C electric force between them is_____________?
A. 9x107N
B. 900N
C. 9x105N
D. 9x106N

115. If the distance between the two point charges become half then force between them becomes______________?
A. double
B. half
C. four times
D. remains same

116. If a charged rod is brought closer to a gas filled balloon then______________?
A. Radius decreases
B. Balloon bursts
C. Radius increase
D. Balloon squeezes

117. Photocopier and inject printer are dealt in________________?
A. Electrostatics
B. Charges in motion
C. Capacitors
D. Electric fields

118. N/C =_____________?
A. V/A
B. J/V
C. V/m
D. A/m

119. Electric flux due to a point charge +q is______________?
A. 1/4IIɛ q/r
B. q/ɛ0
C. 1/4IIɛ0. q/r2
D. 4IIɛ0

120. Which one of the following can be taken as the measure of electric intensity ?
A. F/A
B. V/A
C. VF/A
D. q/VA