Radioactivity Was First Discovered in Salts of Which of the Following

question 77

Multiple Choice

Radioactivity was first discovered in salts of which of the following elements?

• A) sodium
• B) radium
• C) radon
• D) uranium

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Definitions:

Primary Voltage

The voltage at the input of a transformer or any primary side of an electrical system.

Primary Phase Current

The initial or main current flow in one phase of a system before splitting into secondary phases or circuits.

Resistive Load

An electrical load that consumes energy in the form of heat or light, behaving according to Ohm's law.

Turns Ratio

The ratio of the number of turns in the primary winding to the number of turns in the secondary winding of a transformer, affecting its voltage and current transformation.