1. 10 coulombs of charge flows past a point in a circuit in 4 seconds. What is the current?
2. A 50-ohm resistor is connected to a 10-volt battery. What current passes through the resistor?
3. Two 100-ohm resistors are in series. What is their total resistance?
4. If these two 100-ohm resistors were connected in parallel, what would be their total resistance now?
5. Work out problems 3 and 4, assuming that the resistors are connected to a 10-volt battery. Draw diagrams for each situation, and find the total current in the circuit.
answers:
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2. 10/50 = 0.2 A
3. 200 ohms
4. 50 ohms (see the comments on the series and parallel post)
5. series: 10/200 A, which is the same for both resistors
parallel: 10/50 A, which is split equally between the two resistors