Round 1 Esdt-l2a Ncet 12-04

100 Questions | By Plugi | Updated: Mar 15, 2022 | Attempts: 273

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1.

A string of five series resistors is connected across a 6 V battery. Zero voltage is measured across all resistors except R3. The voltage across R3 is
- A.
  
  1.2 V
- B.
  
  0 V
- C.
  
  3 V
- D.
  
  6 V
2.

When a fourth resistor is connected in series with three resistors, the total resistance
- A.
  
  Increases
- B.
  
  Increases by one-fourth
- C.
  
  Decreases
- D.
  
  Remains the same
3.

When one of three series resistors is removed from a circuit and the circuit is reconnected, the current
- A.
  
  Increases
- B.
  
  Increases by one-third
- C.
  
  Decreases by one-third
- D.
  
  Decreases by the amount of current through the removed resistor
4.

There are five resistors in a given series circuit and each resistor has 6 V dropped across it. The source voltage
- A.
  
  Is 30 V
- B.
  
  Is 6 V
- C.
  
  Depends on the current flow
- D.
  
  Depends on the resistor values
5.

The total power in a certain circuit is 12 W. Each of the four equal-value series resistors making up the circuit dissipates
- A.
  
  48 W
- B.
  
  12 W
- C.
  
  8 W
- D.
  
  3 W
6.

All the voltage drops and the source voltage added together in a series circuit is equal to
- A.
  
  The total of the voltage drops
- B.
  
  The source voltage
- C.
  
  The total of the source voltage and the voltage drops
- D.
  
  Zero
7.

If a 6 V and a 9 V source are connected series aiding, the total voltage is
- A.
  
  3v
- B.
  
  9v
- C.
  
  6v
- D.
  
  15v
8.

Five resistors are connected in a series and there is a current of 3 A into the first resistor. The amount of current into the second resistor is
- A.
  
  2A
- B.
  
  3A
- C.
  
  4A
- D.
  
  7A
9.

If a 24 V and a 6 V battery are series opposing, the total voltage is
- A.
  
  18v
- B.
  
  30v
- C.
  
  24v
- D.
  
  20v
10.

To measure the current out of the second resistor in a circuit consisting of four resistors in series, an ammeter can be placed
- A.
  
  At any point
- B.
  
  At the negative terminal of the source
- C.
  
  Between the third and fourth resistors
- D.
  
  Between the second and third resistors
11.

What determines the total resistance in a series circuit?
- A.
  
  The sum of the resistors
- B.
  
  The largest resistor
- C.
  
  The largest resistor minus the smaller
- D.
  
  The smallest resistor
12.

A series circuit schematic is recognized because all the components are connected:
- A.
  
  End to end in a "string"
- B.
  
  Horizontally across the page
- C.
  
  In a uniform vertical manner
- D.
  
  Diagonally across the page
13.

If series resistors dissipate 16 mW, 107 mW, 146 mW, and 243 mW, what is the total power consumed by the circuit?
- A.
  
  269 mW
- B.
  
  128 mW
- C.
  
  512 mW
- D.
  
  1024 mW
14.

If two resistors have the same voltage drop in a series circuit, it means:
- A.
  
  They are connected in parallel
- B.
  
  The voltage has doubled
- C.
  
  They are of unequal value
- D.
  
  They are of equal value
15.

With a 900 V source, voltage is divided across 3 series resistors of 300 V, 280 V, and:
- A.
  
  300 V
- B.
  
  280 V
- C.
  
  320 V
- D.
  
  120 V
16.

When a battery is connected to a series circuit, it delivers current based only upon:
- A.
  
  Total resistance
- B.
  
  Average resistance
- C.
  
  Primary/secondary difference
- D.
  
  The polarity connections
17.

Resistance in a series circuit will:
- A.
  
  Oppose current
- B.
  
  Halve the power
- C.
  
  Double the current
- D.
  
  Control the voltage
18.

How will an open resistor affect a series circuit?
- A.
  
  No current will flow in the circuit.
- B.
  
  Current will flow around the open resistor.
- C.
  
  Total resistance will decrease.
- D.
  
  The open resistor will drop 0 V.
19.

Which equation determines individual resistor voltage drop?
- A.
  
  I x R
- B.
  
  V x I
- C.
  
  2I x R
- D.
  
  V x R
20.

The voltage drop across a series resistor is proportional to what other value?
- A.
  
  Its own resistance
- B.
  
  The amount of time the circuit is on
- C.
  
  Wattage rating
- D.
  
  Total resistance
21.

With 20 V applied, an 8-ohm resistor is in series with a lamp. When the lamp is removed, what voltage will be read across the lamp socket?
- A.
  
  20v
- B.
  
  0v
- C.
  
  5v
- D.
  
  8v
22.

In a series circuit, the voltage measured across a short will be:
- A.
  
  The normal voltage drop
- B.
  
  Zero volts
- C.
  
  Source voltage
- D.
  
  Infinite voltage
23.

If 5 V and 16 V power supplies are connected in series-opposing, what is the total voltage?
- A.
  
  11v
- B.
  
  21v
- C.
  
  0v
- D.
  
  -11v
24.

Given a series circuit containing resistors of different values, which statement is not true?
- A.
  
  The current through each resistor is the same.
- B.
  
  The sum of the voltage drops across each resistive element will be equal.
- C.
  
  The total resistance is the sum of the value of the resistors.
- D.
  
  The voltage drop across each resistor is the same.
25.

A series circuit current:
- A.
  
  Remains the same through each component
- B.
  
  Is the same as the individual resistances
- C.
  
  Varies through each component
- D.
  
  Is subtracted by each component