Q1- a) What is the resistance of a light bulb that uses 75 Watts at 115 Volts? b) What is the current in the bulb in this situation?
Q2- An electric heater is designed to consume 600 W when connected to a 120 V line. How much power is actually used if line voltage is only 110 V?
Q3- A 6V, 3W light bulb connected across a 6 V battery draws a current of 0.480 A. Find the battery’s internal resistance.
Q4- A 9 volt battery has 5 W internal resistance and is supplying current to a 25 W load. Find: a) the current. b) the terminal voltage of the battery. c) the power delivered to the load.
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