Explain how the potential difference across the resistor and the lamp will change when the switch is closed

What happens in a global convection cell

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

In a system, when potential energy decreases, then entropy also decreases. true false