Question

resistance to the flow of electrons produces.
○ electricity
○ voltage
○ light
○ heat
question 12
which are the three units used to measure a welding current.
○ voltage,ohms,and arc length
○ ohms, arc length, and amps
○ arc length, amps, and watts
○ amps, watts, and volts

Explanation:

For the first question: When electrons flow against resistance, electrical energy is converted to thermal energy (heat) as described by Joule's law. Electricity is the flow itself, voltage drives the flow, and light is a secondary effect in specific components, not a direct product of resistance to electron flow.
For Question 12: Welding current-related measurements use Amperes (Amps, measure electric current), Volts (measure electrical potential difference), and Watts (measure electrical power, calculated as current × voltage). Arc length is a physical distance, not a unit, and Ohms measure resistance, which is not a primary unit for measuring welding current parameters.

Answer:

1. heat
2. Amps, Watts, and Volts