A. glass rod acquires negative charge while silk acquires positive charge
B. glass rod acquires positive charge while silk acquires negative charges
C. both glass rod and silk acquire negative charge
D. both glass rod and silk acquire positive charge
Related Mcqs:
- A metal rod of 25 cm length is moving at a speed of 0.5/sec in direction perpendicular to 0.25T magnetic field. Emf produced in the rod is_____________?
A. 0 volt
B. 3.125 volt
C. 31.25 volt
D. 0.03125 volt - 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 - The dielectric constant (relative permittivity) of glass is given by___________?
A. 0.1 to 0.4
B. 0.5 to 1.0
C. 2.0 to 4.0
D. 5 to 100 - Two similar charges each of one coulomb placed in air one meter apart repel each other with a force______________?
A. 9 x 109N
B. 9.2 x 104N
C. 9 x 109N
D. 9 x 107N - Electric intensity being a vector quantity always points_______________?
A. along the direction of force experienced by a unit positive charge
B. opposite to the direction of force experienced by a unit positive charge
C. perpendicular to the direction of force experienced by a uit positive charge
D. any of above - A charge of 0.10C accelerated through a potential difference of 1000V acquires kinetic energy_______________?
A. 200J
B. 100J
C. 1000J
D. 100 eV - If metallic conductor is charged negatively then its weight______________?
A. Remains same
B. First increases then decreases
C. Decreases then increases
D. Increases for a while - Value of εr for various dielectrics is always________________?
A. Less than unity
B. Equal to the unit
C. Larger than unit
D. No hard and fast rule - Potential difference is the work done in moving unit positive charge form one point to another________________?
A. in the direction of electric intensity
B. against electric intensity
C. in any direction
D. in the direction of electric flux - 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
