Physics Practice Test – Electric Charges (Questions with Answers and Explanations)

A short chain is something attached to the back of a petrol tanker to _____ (JAMB 2008)

A. generate more friction
B. ensure the balancing of the tanker
C. caution the driver when over speeding
D. conduct excess charges to the earth

In which of the parts will electric charge tend to concentrate most? (JAMB 2020)

When a conductor mounted on an insulating stand is charged and left for some time, the conductor eventually loses all its charges. This is because the ________ (WASSCE 2009)

A. electric charges evaporate from the surface of the conductor.
B. charges are conducted to earth
C. charges on the conductor are neutralized by opposite charges from the surrounding air.
D. Charges ionize the surrounding air

When a negatively charged rod ¡s brought near the cap of a charged gold leaf electroscope which has positive charges, the leaf ______ (JAMB 2014)

A. remains the same
B. collapses
C. collapses and diverges again
D. diverges

A positively charged rod X is brought near an uncharged metal sphere Y and is then touched by a finger with X still in place. When the finger is removed, the result is that Y has _______ (JAMB 2003)

A. on charge and a zero potential
B. a positive charge and a zero potential
C. a negative charge and a positive potential
D. a negative charge and a negative potential