An ideal transformer has a primary with 30 turns and secondary with 12 turns. The load resistor is 61 Ω and the source voltage is 88 Vrms . 88 Vrms RS 30 turns 12 turns 61 Ω If a voltmeter across the load measures 12.3 Vrms , what is the source resistance RS? Answer in units of Ω.

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?

Ain is , is 's of ? 0.62 0.79 1.27 1.50