Physics 1996 WAEC Past Questions

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The diagram above represents a stationary wave set up in a string which is fixed at both ends. lf the frequency of the wave is 256Hz and the distance N1 N2 equals 1.5m, calculate the speed of the wave.

A. 128ms^-1
B. 192ms^-1
C. 384ms^-1
D. 768ms^-1
E. 1536ms^-1

View Answer & Discuss (2) WAEC 1996

CalcuIate the power delivered by a 3-phase line if its voltage and current at 132KV and 60A respectively.

A. 2.38 x 10⁷W
B. 7.92 x 10⁶W
C. 3.96 x 10⁶W
D. 2.64 x 10⁶W
E. 7.92 x 10⁴W

View Answer & Discuss (2) WAEC 1996

The main function of the mouth of a telephone is to convert sound energy into

A. heat energy
B. light energy
C. chemical energy
D. electrical energy
E. mechanical energy

View Answer & Discuss WAEC 1996

Which of the following is not a component of a d.c. electric motor?

A. Commutator
B. Field magnets
C. Slip rings
D. Armature
E. Carbon brushes

View Answer & Discuss (1) WAEC 1996

The diagram above illustrates the conversion of a galvanometer of resistance 29 to an ammeter. The galvanometer gives a full-scale deflection for a current of 10mA. Calculate the value of R.

A. 2.0 x 10³ Ω
B. 2.0 x 10² Ω
C. 2.0 x 10^-1 Ω
D. 2.0 x 10^-2 Ω
E. 2.0 x 10^-3 Ω

View Answer & Discuss (6) WAEC 1996

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Physics 1996 WAEC Past Questions

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