Physics WAEC Past Questions

Exam Type:

Exam year:

Question Type:

Topics:

Clear Selections
Change Subject Post a Question Check Syllabus Study My Bookmarks Past Questions Videos Watch Video Lessons Download App

Your School's Whatsapp Group - Join Us now

WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now

WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now

771

Local actions is normally prevented in a simple electric cell by

A. introducing an oxidizing agent in the acid
B. not drawing current continously for long period
C. amalgamating the surface of the zinc plate
D. using a porous pot to isolate the zinc plate from the acid

View Answer & Discuss (2) WAEC 2002

772

The lead-acid accumulator consists of a

A. lead as the positive electrode
B. lead ocide as the negative electrode
C. hydrochloric acid as the electrolyte
D. tetraoxosulphate(VI) acid as the electrolyte

View Answer & Discuss (2) WAEC 2002

773

Which of the following actions will not lead to an increase in the induced e.m.f. in a coil of wire rotating between the poles of a magnet? Increasing the

A. strength of the magnet
B. number of turns in the coil
C. speed of location in the coil
D. gap between the poles of the magnet

View Answer & Discuss (2) WAEC 2002

Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts

774

A transformer has 400 turns and 200 turns in the primary and secondary windings respectively. If the current in the primary and secondary windings are 3A and 5A respectively. calculate the efficiency of the transformer?