Electronics-Parallel Circuits
Electronics-Parallel Circuits
1. When parallel resistors are of three different values, which has the greatest power loss?
- The smallest resistance
- The largest resistance
- They have the same power loss.
- Voltage and resistance values are needed.
3. The voltage across any branch of a parallel circuit:
- varies as the total current varies
- is inversely proportional to total circuit resistance
- is equally applied to all branch conductances
- is dropped in proportion to each branch resistance
4. What is the total power loss if 2 k and 1 k parallel-connected resistors have an IT of 3 mA?
- 6 W
- 36 W
- 6 mW
- 36 mW
5. What happens to total resistance in a circuit with parallel resistors if one of them opens?
- It increases.
- It halves.
- It remains the same.
- It decreases.
6. Components that connect in parallel form:
- branches
- open circuits
- short circuits
- a voltage divider
7. A parallel circuit differs from a series circuit in that a parallel circuit has
- no path for current flow
- fewer paths for current flow
- one path for current flow
- more than one path for current flow
8. If two parallel-connected resistors dissipate 6 watts and 10 watts of power, then what is the total power loss?
- 3.75 watts
- 4 watts
- 16 watts
- 60 watts
9. Kirchhoff's current law for parallel circuits states that the:
- sum of all branch voltages equals zero
- total circuit resistance is less than the smallest branch
- sum of currents into a junction is equal to the difference of all the branch currents
- sum of the total currents flowing out of a junction equals the sum of the total currents flowing into that junction
10. If 550 mA of current leaves a node that had 250 mA entering from one branch, how much current would enter from the other?
- 250 mA
- 300 mA
- 550 mA
- 800 mA