Jamb Physics 2005 Past Questions and Answers

Question 31:

• JAMB 2005

A car battery rated 45 A H is charged with a charger whose rating is 2.5A.How long will it take to charge the battery full?

A. 10 hrs
B. 18 hrs
C. 20 hrs
D. 25 hrs

Question 32:

• JAMB 2005

The electric field intensity in a place where a charge of 10^-10c experiences a force of 0.4N is?

A. 4.0 x 10⁷ NC^-1
B. 8.0 x 10⁹ NC^-1
C. 8.O x 10^-12 NC^-1
D. 4.0 x 10⁹ NC^-1

Question 33:

• JAMB 2005

Two charged particles are projected into a region where there is a magnetic field perpendicular to their velocities. if the charges are deflected in opposite directions, which of the following statements is true of the charge?

A. The charge must be of opposite sign
B. Positive charges are more in number
C. The charges are electrically neutral
D. The charges are of the same sign

Question 34:

• JAMB 2005

The resistance of a pieces of wire of lenght 20m are crossed-sectional area 8 x 10 ⁶m²is?
[Resistivity of the wire = 4 x 10^-7 Ω m]

A. 5.0 Ω
B. 0.5 Ω
C. 10.0 Ω
D. 1.0 Ω

Question 35:

• JAMB 2005

The figure above shows a plot of angles of deviation through a glass prism when light is incident at θ degrees on the prism. The incident angle that produces the minimum deviation is

A. 20^o
B. 18^o
C. 35^o
D. 25^o