Question

The process of electron emission that takes place in a spark plug is

• A. Field emission
• B. Photoelectric emission
• C. Thermionic emission
• D. Secondary emission

Hint:

Remember the four common types of electron emission: \[ \boxed{ \begin{aligned} \text{Heat} &\rightarrow \text{Thermionic}, \text{Light} &\rightarrow \text{Photoelectric}, \text{Electric field} &\rightarrow \text{Field}, \text{Particle bombardment} &\rightarrow \text{Secondary}. \end{aligned} } \]

Answer 1

The Correct Option is A