Discussion Questions: Ohm's Law

• What are some ways to change the resistance in a circuit?
• Suppose you have an electrical device that needs a steady current of 10 milliamperes. You need to greatly increase the length of the wire between the battery pack and the appliance. What changes will you need to make in your circuit to keep a steady current?
• Suppose you are designing a toaster, a device that requires several hot, glowing wires to do its job. You want to use as little voltage as possible. Describe the characteristics of the "toasting" wires.