Question 711:

• JAMB 1992

The diagram above represents the field pattern obtained by bringing the poles of two magnets together.The poles must be

A. S-S poles
B. S-N poles
C. N-S poles
D. N-N poles

Question 712:

• JAMB 1992

The diagram above shows a meter bridge in which two of thee arms contain resistances R and 2Ω. A balance point is obtained at 60cm from the left end , calculate the value of R

A. 1.2Ω
B. 1.3Ω
C. 3.0Ω
D. 6.0Ω

Question 713:

• JAMB 1992

The circuit diagram above contains four ammeters W, X, Y and Z, Which of the following statements about the ammeter readings is correct

A. The reading of W is equal to that of Y and twice that of X
B. The reading of Y is greater than that of Z
C. The readings of W and Y are equal and each is greater than that of X
D. The reading of Z is equal to the sum of the readings of Y and W

Question 714:

• JAMB 1992

A capacitor of 10µF is connected across a cell of 12 volts as shown above, calculate the energy stored in the capacitor

A. 7.2 x 10^-4J
B. 1.4 x 10^-3J
C. 1.4 x 10^-3J
D. 1.2 x 10^-2J

Question 715:

• JAMB 1993

Which of the following quantities has the same unit as the watt?

A. Force x time
B. Force x distance
C. Force x acceleration
D. Force x velocity