A. similar charges repel each other
B. dissimilar charges attract each other
C. repulsion is the sure test of electrification
D. an electrically neutral body is repelled both positively and negatively charged bodies
Electrostatics
Electrostatics
A. the electric lines of force have no physical existence
B. they expand laterally and contract longitudinally
C. they do not cross each other and group together in dielectric
D. all the above statements are true
A. double
B. half
C. four times
D. remains same
A. 9x107N
B. 900N
C. 9x105N
D. 9x106N
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
A. Neutrons
B. X-rays
C. Both glass rod and silk acquire a negative charge
D. None
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
A. imaginary
B. physically existing every where
C. physically existing near the charges
D. depends upon case
A. The potential difference remains constant capacittance and energy stored increases
B. The potential difference remains constant capacittance decreases and energy increases
C. The potential difference decreases but both capacitance and energy increase
D. both potential difference and capacitance decrease but energy increases
A. 900 volts
B. 9000 volts
C. 90 volts
D. zero
