POST UTME AL-HIKMAH UNIVERSITY 2022 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A resistor of 10 Ω and an inductor of 5.0 H are connected in series. If a voltage of 20 V is applied across the circuit, what is the current?
A. 0.50 A
B. 1.0 A
C. 2.0 A
D. 4.0 A
Question 2
A 100 μF capacitor is connected in parallel with a 200 Ω resistor. If the voltage across the capacitor is 50 V, calculate the current flowing through the resistor.
A. 0.25 A
B. 0.5 A
C. 1 A
D. 2 A
Question 3
A 50 Hz AC voltage source has a peak value of 100 V. Calculate the rms value of the voltage.
A. 70.71 V
B. 50 V
C. 100 V
D. 141.42 V
Question 4
A sound wave with a frequency of 200 Hz has a wavelength of 1.5 m. Calculate the speed of the sound wave.
A. 300 m/s
B. 400 m/s
C. 500 m/s
D. 600 m/s
Question 5
A 10 Ω resistor is connected in series with a 20 Ω resistor and a 30 Ω resistor. If a voltage of 12 V is applied across the circuit, calculate the current through the 10 Ω resistor.
A. 0.6 A
B. 0.8 A
C. 1 A
D. 1.2 A
Question 6
A 100 W bulb is connected to a 220 V power supply. If the bulb is used for 5 hours a day, calculate the energy consumed in a month.
A. 4500 Wh
B. 5000 Wh
C. 5500 Wh
D. 6000 Wh
Question 7
A particle of mass 0.5 kg is moving in a circular path of radius 2.0 m with a cons\tant speed of 4.0 m/s. What is the magnitude of the net force acting on the particle?
A. 10.0 N
B. 20.0 N
C. 30.0 N
D. 40.0 N
Question 8
A uniform magnetic field of 2.5 T is applied to a coil of 50 turns and radius 0.05 m. If the coil is rotated through an angle of 90° in 0.1 s, calculate the induced emf.
A. 0.25 V
B. 0.5 V
C. 1 V
D. 2 V
Question 9
A 10 Ω resistor and a 20 Ω resistor are connected in series across a 50 V power source. Determine the current flowing through the circuit.
A. I = 1 A
B. I = 2 A
C. I = 3 A
D. I = 4 A
Question 10
A 10 Ω resistor is connected in series with a 20 Ω resistor and a 30 Ω resistor. If a current of 2 A is flowing through the circuit, calculate the voltage across the 20 Ω resistor.
A. 20 V
B. 40 V
C. 60 V
D. 80 V
Question 11
A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subjected to a centripetal force of 12 N, what is the angle between the velocity vector and the radius vector at the ins\tant the particle is at the top of its circular path?
A. π/2
B. π/3
C. π/4
D. π/6
Question 12
A 12 V battery is connected in series with a 4 Ω resistor and a 6 Ω resistor. Calculate the current flowing through the circuit.
A. 1 A
B. 2 A
C. 3 A
D. 4 A
Question 13
A light source is placed 2 m away from a convex lens of focal length 1 m. If the light source is moved to a dis\tance of 4 m, determine the new image dis\tance.
A. d_i = 2 m
B. d_i = 4 m
C. d_i = 6 m
D. d_i = 8 m
Question 14
A 2 kg block is moving with a velocity of 5 m/s on a frictionless surface. If the block is subjected to a force of 10 N, determine the acceleration of the block.
A. a = 2 m/s^2
B. a = 5 m/s^2
C. a = 10 m/s^2
D. a = 20 m/s^2
Question 15
A capacitor of 100 μF is connected in series with a 200 μF capacitor. If a voltage of 10 V is applied across the circuit, calculate the charge on the 100 μF capacitor.
A. 0.001 C
B. 0.002 C
C. 0.003 C
D. 0.004 C

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