Question

Fill in the blanks.
a. ________ is an instrument which is used to detect small electric charges.
b. When two glass rods rubbed with silk, are brought near to each other they will ________.
c. ________ cells help us to see in strong light.
d. ________ is the device for discharging atmospheric electricity through a conductor into the earth.

Answer 1

A = Galvanometer
B = Repel
C = Rod cell
D = Lightning conductor