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