Electricity and Circuits Review

Flashcards for lecture review.

Resistance

A property of a material that slows down the flow of electric current and converts electrical energy into heat.

Rheostat

A variable resistor.

Closed Circuit

A circuit where the path is complete, allowing electric current to flow.

Open Circuit

A circuit that is broken or incomplete, so no current flows.

Factors Affecting Resistance

Length of the wire, thickness of the wire, and material of the wire.

Ohm’s Law

V = I × R, where V = voltage (volts), I = current (amperes), and R = resistance (ohms).

Difference Between Series and Parallel Circuits

Series circuit: One path for current; if one device fails, all stop. Parallel circuit: Multiple paths; if one device fails, others still work.

Materials for Electromagnet

Iron nail (core), coil of wire, and power source (battery).

LED Light Bulb energy conversion

Electricity converted to Light

Photovoltaic Cell energy conversion

Light converted to Electricity

Battery energy conversion

Chemical converted to Electricity

Stove energy conversion

Electricity converted to Heat

Electric Motor energy conversion

Electricity converted to Mechanical