Post Utme Physics Past Questions and Answers

Question 1101:

Five \(2 \Omega\) resistors were connected in two ways, in series and parallel. What is the ratio of the series equivalent resistance to parallel equivalent resistance?

A. \(1: 50\)
B. \(2: 5\)
C. 1:25
D. \(5: 6\)

Question 1102:

Calculate the energy stored in a capacitor of capacitance \(50 \mu F\) when a voltage of \(220 V\) is applied to its terminals.

A. 2.0 Joule
B. 1.0Joule
C. 3.0Joule
D. 4.0Joule

Question 1103:

Calculate the equivalent capacitance between the terminals.

A. \(6 C / 11\)
B. C/6
C. \(17 C / 6\)
D. \(6 C\)

Question 1104:

A material of threshold frequency \(4.5 \times 10^{15} Hz\), was bombarded with Photons of frequency \(8.0 \times 10^{15} Hz\). What is the kinetic energy of the emitted photoelectrons (in eV)?
\(\left[h=6.60 \times 10^{-34} Js , 1 eV =1.6 \times 10^{-19} J \right]

A. 2 .81 eV
B. 2.19 eV
C. 5.00 eV
D. None of the above

Question 1105:

Which of the following is not true of a force experienced by a current carrying conductor placed in a magnetic field? The force is proportional to ____________

A. The length of the conductor
B. The magnetic field strength
C. The density of the conductor
D. The current in the conductor