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TEST KEEP CLOSED

THERMAL PROPERTIES OF MATTER

Thermal Expansion

Thermal Conductivity

Enclosed Fields and Magnetic Induction

Two Galvanometers are connected in series, with one of the connecting wires being threaded through a torroidal variac coil. When the coil is plugged into the mains, the needle on each galvanometer is seen to oscillate rapidly due to the induced current in the loop. If a third wire is connected in parallel across one of the galvanometers, but not threaded through the coil, the current through that galvanometer is zero. A physical explanation of what it means to “short out” one of the galvanometers can be offered in terms of the net current in all of the wires.

Enclosed Fields and Magnetic Induction