Inductance - Jamb Physics Past Questions and Answers

Question 1:

• JAMB 2019

If the time of flight is 96seconds, calculate the horizontal range through the point of projection.

A. 84400m
B. 69000m
C. 61440m
D. 24000m

Question 2:

• JAMB 1980

In the process of electrification by induction, the amount of induced charge in relation to the inducing charge is the

A. Same in sign and quantity
B. Same in sign but greater
C. Opposite in sign but greater
D. Opposite in sign but less
E. Opposite in sign but equal

Question 3:

• JAMB 1992

In alternating current theory, the units of impedance, r.m.s. voltage and resonance frequency are respectively equal to

A. Volt, ampere and hertz
B. Ohms, volt and hertz
C. Watt, ohms and radian
D. Ohms, hertz and joule

Question 4:

• JAMB 1993

Determine the inductive reactance when a 30.0mH inductor with a negligible resistance is connected to a 1.3 x 10³Hz oscillator.

A. 39.0\(\Omega\)
B. 122.5\(\Omega\)
C. 245.0\(\Omega\)
D. 39000.0\(\Omega\)

Question 5:

• JAMB 1997

In a purely inductive circuit, the current

A. Lags behind the voltage in phase by 90^o
B. Leads the voltage in phase by 90^o
C. Is in the same phase with the voltage
D. Leads the voltage by 180^o