Jamb Physics 2022 Past Questions and Answers

Question 31:

• JAMB 2022

Which of the following is not a consequence of hydrogen bubbles covering the copper plate of a primary cell?

A. Formation of hydrogen bubbles on the electrode
B. Increase in the resistance of the cell
C. Local action
D. Polarization

Question 32:

• JAMB 2022

A cell whose internal resistance is 0.55\(\Omega\) delivers a current of 4 A to an external resistor. The lost voltage of the cell is?

A. 4.00 V
B. 2.20 V
C. 0.15 V
D. 8.00 V

Question 33:

• JAMB 2022

Which of the following liquid is a poor conductor of electricity?

A. Distilled water
B. Tap water
C. Sea water
D. Drinking water

Question 34:

• JAMB 2022

An isotope has an initial activity of 120 Bq. 6 days later its activity is 15 Bq. The half-life is?

A. 3 days
B. 2 days
C. 1 day
D. 4 days

Question 35:

• JAMB 2022

The secondary pigments consist of?

A. Blue, green, and violet
B. Yellow, green, and magenta
C. Magenta, yellow, and cyan
D. Red, green, and blue