If a 15 ohm resistor is connected in parallel with a 30 ohm resistor, what is the equivalent resistance?
2.0 ohms
10. ohms
15 ohms
25 ohms
2. Multiple Choice
5 minutes
1 pt
Three resistors of 20. ohms, 30. ohms, and 60. ohms are connected in series with a battery. A current of 2 amperes will flow through this circuit when the potential difference of the battery is
10. V
220 V
110 V
20. V
3. Multiple Choice
5 minutes
1 pt
Two identical resistors connected in series have an equivalent resistance of 4 ohms. The same two resistors, when connected in parallel, have an equivalent resistance of
8 Ohms
2 Ohms
4 Ohms
1 Ohms
4. Multiple Choice
5 minutes
1 pt
Two identical resistors connected in parallel have an equivalent resistance of 40 ohms. What is the resistance of each resistor?
40. Ohm
160 Ohm
80. Ohm
20. Ohm
5. Multiple Choice
5 minutes
1 pt
At which positition should an ammeter be placed to measure the current passing only through R1?
1
2
3
4
6. Multiple Choice
5 minutes
1 pt
A 9.0 V battery is connected to a 4.0 Ohm resistor and a 5.0 Ohm resistor. What is the current in the 5.0 ohm resistor?
4.0 A
1.0 A
2.3 A
1.8 A
7. Multiple Choice
5 minutes
1 pt
In which current would ammeter A show the greatest current?
1
2
3
4
8. Multiple Choice
5 minutes
1 pt
If switch S1 in the given diagram is open, the reading of Ammeter A is
2.0 A
1.5 A
6.0 A
0.50 A
9. Multiple Choice
5 minutes
1 pt
A physics student is given three 12-ohm resistors with instructions to create the circuit that would have the lowest possible resistance. The correct circuit would be a
parallel circuit with an equivalent resistance of 4.0 ohms
series circuit with an equivalent resistance of 4.0 ohms
parallel circuit with an equivalent resistance of 36 ohms
series circuit with an equivalent resistance of 36 ohms
10. Multiple Choice
5 minutes
1 pt
The equivalent resistance in this part of the circuit is equal to
19 Ohms
0.67 Ohms
1.5 Ohms
6.3 Ohms
11. Multiple Choice
5 minutes
1 pt
What is the potential difference across the source in the circuit shown?