WAEC Physics 2012 Objective — Question 37

Question 37 of 50 from the West African Examinations Council (WAEC) Physics 2012 Objective paper, with the correct answer and a full explanation.

When the pointed end of an uncharged optical pin is brought near the cap of a positively charged electroscope, it is observed that the gold leaf

A. A. collapses slowlyCorrect
B. B. vibrates
C. C. is not affected
D. D. diverges rapidly

Explanation

When an uncharged pointed conductor is brought near a positively charged electroscope, it results in a smaller divergence of the gold leaf, i.e. the leaf collapses slowly, due to electrostatic induction and charge leakage via the point (action of points).

Sign up free to unlock

Score tracking
Practice history
Saved questions
Progress dashboard
Personalized sessions
Weak-topic breakdown

…and/or go further with premium services and No Ads.

Create free account

More questions from Physics 2012 Objective More Physics past papers