Q1. Three resistors are connected in series across a 15-V power supply. If the potential drop across resistors 1 and 2 are 4.1 volts and 3.1 volts, what is the potential drop (in volts) across resistor 3?
Q2. A 213-O and a 221-O resistor are connected in series across an unspecified power supply. If the current through the 213-O resistor is 0.25 A, what is the current (in A) through the 221-O resistor?
Q3. A battery supplies 0.75 A to three parallel resistors. The current through the first resistor is 0.25 A and the current through the second resistor is 0.23 A. What is the current (in A) through the third resistor?
Q4. A 121 O resistor and a 198 O resistor are both connected in parallel across a power supply. If the potential drop across the 121 O resistor is 14 V, what is the potential drop (in V) across the 198 O resistor?