Question

In a simple electric circuit, a 110-volt electric heater draws 2.0 amperes of current. What is the resistance of the heater?

Answer 1

The relation between voltage, current and resistance can be describes using Ohm's law where:
Voltage = Current * Resistance

We are given that:
voltage = 110 volt
current = 2 ampere

Substitute with the givens in the above equation to get the resistance as follows:
Voltage = Current * Resistance
110 = 2*Resistance
Resistance = 110 / 2 = 55 Ω