1. Find the equivalent resistance of two resistors connected in parallel if one is 0.5 ohm and the other 0.33 ohm
2. Two resistors, 5 ohm and 10 ohm, are connected in series. If a current of 2 A flows through the 5-ohm resistor, what current will flow through the 10-ohm resistor?
3. A light bulb with a resistance of 4 ohms draws a current of 2 A to light up a den, how much will it cost to run the bulb continuously for 30 days if the cost of electrical energy is rated at 5 cents per kW-Hr?