SNC 1D Resistance in Circuits (13.7) Read pp. 564-566 1. Define the following terms. Definition / Description Units: Electrical Resistance (R) Circuit symbol: Ohmmeter Circuit symbol: Resistor 2. Briefly describe 4 factors that affect the resistance of a material. 3. Draw a circuit diagram showing how an ohmmeter is connected to the circuit (consisting of 1 cell, 1 light bulb, and connectors) to measure the resistance across the light bulb. Electrical resistance is the characteristic of a material that slows electron flow.