Resistance in series and in parallel and their combination - 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 1978

Two resistors R1 and R2 are connected in parallel, R2 being greater than R1. The combined resistance is

A. Less than R₁
B. Greater than R₂
C. The sum of R₁ and R₂
D. The difference of R₂ and R₁
E. Greater thanR₁ but less than R₂

Question 3:

• JAMB 1978

Three 5 ohms resistors connected in parallel have a potential difference of 60v. applied across the combination. The current in each resistor is

A. 4A
B. 36A
C. 12A
D. 24A
E. 10A

Question 4:

• JAMB 1978

In a D.C. circuit, a 10 microfarad (mf) capacitor is placed in series with a 10 0hm resistor. The total resistance of the combination is

A. 10 ohms
B. 1 ohms
C. Zero
D. 20 ohms
E. Infinite

Question 5:

• JAMB 1979

An electric cell has an internal resistance of 2 ohms. A current of 0.5A is found to flow when a resistor of 5 ohms resistance is connected across it. What is the electromotive force of the cell?

A. 5 volts
B. 3.5 volts
C. 2.5 volts
D. 1 volts
E. 10 volts