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WorksheetsElectric charges at rest
Total questions: 10
Worksheet time: 7mins
_________ does not get charged up on rubbing.
Drinking straw
Glass rod
Metal pan
Ebonite rod
A device which is designed to minimize, or avoid, the loss of life and property during lightning is-
Lightning conductor
Gold leaf Electroscope
Ebonite rod
Metal rod
The scientist, who proved that lightning is electrical in nature was-
Benjamin Franklin
Joule
Davy
Ramford
When glass rod is rubbed against silk cloth, the charge acquired by silk cloth is-
Positive
Negative
Like charges always _______ each other.
Attract
Repel
During charging (i) by conduction, and (ii) by induction, the charge on the charging object-
Decreases in both the cases
Decreases in the first case but remains unchanged in the second case
Decreases in the second case but remains unchanged in the first case
Remains unchanged in both the cases.
A charged ebonite rod 'B' is brought near another similarly charged and suspended, ebonite rod 'A'. Then ebonite rod A, would-
Remain unaffected
Move towards rod B
Move away from rod B
Start oscillating
Substances which acquire sine charges on rubbing and do not allow electric charges to pass through them are called-
Insulators
Conductors
The process of charging an uncharged object without actually touching it with a charged object is called-
Induction
Conduction
Rubbing/ friction
Radiation
A sudden electric discharge between A charged up cloud and some other objects is called-
Lighting
Earthing
Thundering
None
