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54 Cards in this Set
- Front
- Back
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What is the formula for finding total current in a parallel circuit when branch currents are known?
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(You just add up the currents for each branch of the circuit) |
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What formula is used to find total current in a parallel circuit when the total resistance and applied voltage of that circuit are known? |
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If a circuit has three branches with branch currents of 10 amps, 5 amps, and 12.5 amps, what would be the total circuit current? (Round the FINAL answer to one decimal place.)
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If two 6-volt sources are connected in parallel to supply a 24-ohm load, how much current will flow in the circuit? (Round the FINAL answer to two decimal places.) |
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If two 6-volt sources are connected in parallel to supply a 24-ohm load and the total current is 0.25 A, how much current would each source supply to the load? (Round the FINAL answer to three decimal places.) |
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Find the total current in the circuit by calculating the individual branch currents, and then using the sum rule for total parallel circuit current to determine the total current. |
The correct answer is: 4.9 |
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What is the total resistance for the circuit? |
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Calculate the branch current which would be shown on Ammeter M2 in the circuit. |
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Find the total current in the circuit by calculating the individual branch currents, and then using the sum rule for total parallel circuit current to determine the total current. IT = __ A |
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Find the total current in the circuit by calculating the individual branch currents, and then using the sum rule for total parallel circuit current to determine the total current. IT = ___ A |
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Find the total current in the circuit with the switches in the position shown. IT = ___ A |
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If all lamps draw the same amount of current, closing the switch on Lamp 3 will add 1 amp of current to the circuit. True/False |
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A circuit has a 24-volt supply and four identical resistors in parallel. If the total equivalent circuit resistance is 5 ohms, what is the current in each branch of the circuit? (Round the FINAL answer to one decimal place.) |
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In this circuit, two - 47-ohm load resistors are connected in parallel with a 12-volt supply. What is the total number of 47-ohm resistors (including the first two) that can be connected without blowing the 2-amp fuse? |
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A circuit contains five 180-ohm resistors in parallel. What is the total circuit resistance? (Use the rule for determining total resistance with resistances of equal value.) |
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Two lamps are connected in parallel across a 120-volt source. Each lamp has an internal resistance of 96 ohms. What is the equivalent circuit resistance? |
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State the product over sum formula for determining total resistance in parallel circuits containing two unequal resistances. |
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Use the product-sum method to solve for total resistance in a circuit containing one 25-ohm and one 15-ohm resistor. (Round the FINAL answer to three decimal places.) |
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Use a variation of the equal-resistance rule to solve for the equivalent resistance in the circuit. (Round the FINAL answer to one decimal place.) |
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Solve for total circuit resistance in the circuit. (Round the FINAL answer to two decimal places.) |
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Solve for total circuit resistance in the circuit. (Round the FINAL answer to two decimal places.) |
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Determine the value of R2 in the circuit. |
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Determine the value of R3 in the circuit. (Round the FINAL answer to two decimal places.) |
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What is the total resistance of the circuit with S1 closed, and both S2 and S3 open? |
Solution: With S1 closed and both S2 and S3 open, the only resistance seen by the source is R1. This is a simple series circuit. The resistance is 270 ohms.The correct answer is: 270 Ω
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What is the total circuit resistance with S1 and S2 closed? (Round the FINAL answer to two decimal places.) |
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What is the total circuit resistance with S1 and S3 closed? (Round the FINAL answer to two decimal places.) |
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What is the total circuit resistance with all switches closed? (Round the FINAL answer to two decimal places.) |
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What is the total circuit resistance with all switches closed? (Round the FINAL answer to two decimal places.) True/False |
False Note: When resistors are connected in parallel, the total resistance of the circuit will be less than the smallest resistor value in the circuit. |
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In final form, how would a ratio of 3/2 be properly stated? I. 1.5 II. 2/3 III. 3 to 2 IV. 3:2 |
III (3 to 2) and IV (3:2) |
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In a proportion, the ? of the equivalent fractions are always equal. |
cross products |
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What is the compression ratio for an engine if each cylinder has a maximum volume of 500 cubic centimeters and a minimum volume of 50 cubic centimeters? |
10:1 |
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True/False The voltage applied to each load in a parallel circuit is the same. |
True |
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The current through any branch of a parallel circuit will be ? the total circuit current. |
Less than |
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What is the voltage of the source if each resistor has a resistance of 100 Ω and the current through each resistor is 3 amps? |
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Determine the voltage across resistor R2. |
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Calculate the total current for the circuit. |
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What will happen to the voltage applied to resistor R2 if the circuit opens at Point A? |
The voltage applied to R2 would not change |
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What is the total voltage of this circuit if each battery is 12 volts? |
12 V |
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How much power would be consumed in a parallel circuit that has a source voltage of 300 volts and a total circuit current of 4.2 amps? |
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Three lamps, with wattages of 100 watts, 250 watts and 60 watts, are connected on a circuit. What is the total power consumed by the circuit when all lamps are operating? |
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Two heaters are connected on the same 120-volt circuit. If the heaters draw 5 amps of current each, how much total power is delivered to the heaters? |
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Which formula will not be required to calculate the total circuit power in the circuit using the indirect method? |
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A circuit contains nine 250-watt lamps connected in parallel across a 120-volt circuit. How much power is consumed by the circuit? |
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How many 60-watt lamps could be connected in parallel on a 15-amp, 120-volt circuit without exceeding 80% of the rating of the circuit? |
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Find the power consumed by R3 in the circuit shown. |
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Find the total power that must be delivered by the voltage source in the circuit shown. |
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Determine the current for I1. (Round the FINAL answer to one decimal place.) |
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What are the three rules that are to be applied when solving problems involving direct or inverse proportions? |
Set up the proportion Substitute the values Solve by cross-multiplication |
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A parallel circuit is one in which there is more than one point where the ? divides and follows different paths. a. current b. power c. resistance d. voltage |
a. current |
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True / False Circuit components that are connected in such a way that they provide different current paths are said to be connected in parallel. |
True |
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For a circuit to be considered a parallel circuit, there must be at least ? path(s) for current to flow. |
2 |
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True / False The branch of least resistance in a circuit will consume the most power |
True |
