JAMB Physics Past Questions & Answers - Page 121

601.

PQRS is rectangular cell with PQ perpendicular to the magnetic field as shown above. If a current flows in the the direction PQRS in what direction will the coil move

A.

Upwards

B.

Downwards

C.

Towards The North Pole

D.

Towards The South Pole

Correct answer is A

No explanation has been provided for this answer.

602.

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

Correct answer is A

No explanation has been provided for this answer.

603.

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

Correct answer is C

No explanation has been provided for this answer.

605.

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

Correct answer is A

No explanation has been provided for this answer.