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841

Calculate the current, I in the diagram shown above.
(Neglect the internal resistance of the cell)

A. 4.0A
B. 2.0A
C. 1.0A
D. O.5A
E. 0.1A.

View Answer & Discuss (6) WAEC 1993

842

Which of the following is not a conductor of electricity?

A. Human body
B. Glass
C. Silver
D. Earth
E. Copper

View Answer & Discuss WAEC 1993

843

ln the diagram below, the galvanometer indicates a null-deflection. What is the potential difference between P and Q?

A. 0.0 V
B. 1.5 V
C. 2.0 V
D. 3.0V
E. 4.0 V.

View Answer & Discuss (5) WAEC 1993

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844

When a potential difference, V is applied across the ends of a resistor of resistance, R a Current, l passes through the resistor. The heat generated in the resistor in time, t is given by the expression

A. V²lt
B. I²t/R
C. l²Rt
D. lR²tR
E. V²Rt

View Answer & Discuss (1) WAEC 1993

845

Electric motor primarily converts

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

View Answer & Discuss WAEC 1993

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