It is a cold night around the campfire. megan is trying to get warm by sitting close to the fire and clutching her mug of hot chocolate. how is heat being transferred to chilly megan?

1. what is the si unit of emf? 2.a complete series circuit consists of a 12.0 v battery, a 4.70 ω resistor, and a switch in the closed position. the internal resistance of the battery is 0.30 ω. what does an ideal voltmeter read when placed across the resistor?