Conduction of Electricity Through; - Jamb Physics Past Questions and Answers

Question 11:

• JAMB 2012

I. Low pressure.
II. High pressure.
III. High p.d.
IV. Low p.d.
Which combination of the above is true of the conduction of electricity through gases?

A. I and IV only
B. I and III only
C. II and IV only
D. II and III only

Question 12:

• JAMB 2012

I. Low pressure.
II. High pressure.
III. High p.d.
IV. Low p.d.
Which combination of the above is true of the conduction of electricity through gases?

A. I and IV only
B. I and III only
C. II and IV only
D. II and III only

Question 13:

• JAMB 2014

Which gas produces a pink coloured light in a discharge tube?

A. Mercury
B. Argon
C. Air
D. Neon

Question 14:

• JAMB 2018

The electrochemical equivalent of silver is 0.0012g/C. If 36.0g of silver is to be deposited by electrolysis on a surface by passing a steady current for 5mins, the current must be?

A. 6000A
B. 100A
C. 10A
D. 1A

Question 15:

• JAMB 2019

The conductivity of gases at low pressure can be termed as
I. hot cathode emission
II. thermo ionic emission
III. cold cathode emission
IV. Field emission

A. I & II
B. II & III
C. III & IV
D. IV & V