JAMB Physics Past Questions & Answers - Page 136

676.
677.

What is the resistance of the circuit shown above

A.

4Ω

B.

11Ω

C.

19/5Ω

D.

17/4Ω

E.

8Ω

Correct answer is E

from the diagram, 2ohms and 2ohms are parallel, then total resistance = 1ohms

1ohms, 3ohms and the 4ohms are in series

then total resistance = 1 + 3 + 4 = 8ohms.

678.
679.

Which of the following figures gives the correct resultant R of two vectors P and Q?

A.

I

B.

II

C.

III

D.

IV

E.

V

Correct answer is D

No explanation has been provided for this answer.