### 2. When there is 12 mA of current through a 1.2 k? resistor, the voltage across the resistor is

### 3. A 120 V lamp-dimming circuit is controlled by a rheostat and protected from excessive current by a 3 A fuse. To what minimum resistance value can the rheostat be set without blowing the fuse? Assume a lamp resistance of 20 ohms.

### 4. What is the voltage source for a circuit carrying 2 A of current through a 36 ? resistor?

### 5. The formula to find I when the values of V and R are known is