Electrostatics - Jamb Physics Past Questions and Answers

Question 61:

• JAMB 2014

When a negatively charged rod is brought near the cap of a charged gold leaf electroscope which has positive charges, the leaf

A. Remains the same
B. Collapses
C. Collapses and diverges again
D. Diverges

Question 62:

• JAMB 2017

Calculate the electric field intensity between two plates of potential difference 6.5V when separated by a distance of 35cm.

A. 18.57NC\(^{-1}\)
B. 53.06N C\(^{-1}\)
C. 2.28NC\(^{-1}\)
D. 0.80NC\(^{-1}\)

Question 63:

• JAMB 2017

Under what conditions are cathode rays produced in a discharge tube?

A. High pressure and low voltage
B. High pressure and high voltage
C. Low pressure and low voltage
D. Low pressure and high volatge

Question 64:

• JAMB 2017

Which of the following is true of an electrical charge?

A. Positive charge means deficit electrons
B. Negative charge means excess of electrons
C. Electric current means movement of electrons
D. All of the above

Question 65:

• JAMB 2018

Which of the following is true of an electrical charge?

A. Positive charge means deficit electrons
B. Negative charge means excess of electrons
C. Electric current means movement of electrons
D. All of the above