D.C circuits Mega Test 2
28 Quiz points Reward on 85% to 100% score
Make sure you go through and revise the third lesson of D.C circuits, so that you do better in this test. As this test can be taken only once, and your score will be saved.
Make sure you have a scientific calculator with you before you start, for calculations.
This test will show, how well you are prepared for the exam. So don’t forget to revise before you start.
This mega test includes 139 D.C circuits Questions.
Total time for this mega test is 2 hours 19 minutes.
You have 1 minutes for each question.
Good Luck!
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79. Question
The diagram shows a battery connected to two identical resistors. Three ammeters M1, M2 and M3 are connected in the circuit.
Meter M1Â reads 1.0A .
What are the readings on M2 Â and on M3 ?
CorrectIncorrectHint
Remember: The current is the same everywhere in a series circuit.
- Question 80 of 139
80. Question
A 30 Ω resistor is connected in series with another resistor and a 6.0 V battery.
The current in the circuit is 0.12 A. A voltmeter is connected across the other resistor.
What is reading on the voltmeter?
CorrectIncorrectHint
First, Calculate the Voltage across the 30? resistor, using the Ohm’s law equation.
Then, As the total potential difference or e.m.f is divided between the two resistors in series, Subtract the V you just calculated from the total Voltage or e.m.f across the battery.
- Question 81 of 139
81. Question
The diagram shows an electric circuit containing three meters, X, Y and Z, all connected correctly.
What are the meters X, Y and Z?
CorrectIncorrectHint
Remember that Ammeter is always connected in series while voltmeter is always connected in parallel.
- Question 82 of 139
82. Question
A student sets up a circuit containing a battery of two cells and three lamps, as shown.
What is the circuit diagram for this arrangement?
CorrectIncorrectHint
If you are not getting this, means you need to revise.
- Question 83 of 139
83. Question
What is the resistance of this combination?
A   0.14Ω     B   0.58Ω    C  1.7Ω     D   7.0Ω
CorrectIncorrectHint
Combined Resistance in parallel = 1 / R1 + 1 / R2
Then the fraction you get, make it upside down (means take denominator up and numerator down) and you will get the answer.
You have to use the calculator to calculate this answer.
- Question 84 of 139
84. Question
A 3.0Ω resistor and a 6.0Ω resistor are connected in parallel.
What is their combined resistance?
A   0.50Ω    B  2.0Ω    C   4.5Ω    D   9.0Ω
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85. Question
Two resistors are connected in parallel.
Which value could be the resistance of the combination?
A    12Ω    B   20Ω    C   25Ω    D   50Ω
CorrectIncorrectHint
If you are not getting it, that means you need to revise.
- Question 86 of 139
86. Question
A student connects various resistors in parallel pairs.
Underneath each diagram is a statement about the total resistance of each pair of resistors.
Which statement is correct?
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87. Question
Two resistors, with resistances R1 and R2 are connected in parallel.
The resistance R1 is greater than the resistance R2.
What is the resistance of the Parallel combination?
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88. Question
Which statement is not correct for lamps connected in parallel?
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89. Question
The diagram shows four arrangements of resistors.
Which arrangement has the smallest total resistance?
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90. Question
A 12 V battery is connected to a combination of 2.0Ω resistors as shown.
What is the current in the battery?
A Â Â 1.5 AÂ Â Â Â Â Â Â Â BÂ Â Â Â 2.0 AÂ Â Â Â Â Â Â Â Â CÂ Â Â 4.0AÂ Â Â Â Â Â Â Â D Â Â Â 6.0A
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91. Question
The circuit diagram shows a 4.0Ω resistor and an 8.0Ω resistor connected to a 6.0V
battery.
What is the potential difference (p.d.) across the 4.0Ω resistor?
A Â Â 0.5V Â Â Â Â Â BÂ Â 2.0VÂ Â Â Â Â CÂ Â 4.0VÂ Â Â Â Â D Â Â 6.0V
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92. Question
The 4.0Ω resistor and an 8.0Ω resistor connected to a 6.0V battery.
What is the current in the 8.0Ω resistor?
AÂ Â Â Â 0A Â Â Â Â Â Â BÂ Â Â 0.50A Â Â Â Â Â Â Â CÂ Â Â 0.75A Â Â Â Â D Â Â 1.0A
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93. Question
The circuit diagram includes two resistors connected in parallel.
Which statement is correct?
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94. Question
The reading on the ammeter in the circuit is 1.0A.
A second ammeter is connected in the circuit. It also reads 1.0A.
At which labelled point is it connected?
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95. Question
A circuit contains four ammeters A, B, C and D, and three resistors with different values.
Which ammeter shows the largest reading?
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96. Question
The diagram shows a circuit containing three ammeters P,Q and R.
Which statement about the readings on the ammeters is correct?
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97. Question
A circuit contains four ammeters and three resistors with different values.
Which ammeter shows the largest reading?
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98. Question
The diagram shows a circuit used to find the resistance of lamp L.
Blocks P, Q and R represent the different components used.
Which is a correct possible choice of components to use for P, Q and R?
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99. Question
A student investigates a circuit that contains two parallel resistors. The circuit includes meter R, S and T which are all connected correctly.
Which type of meters are R, S and T?
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100. Question
In the circuit shown ammeter X reads 0.5A.
What does ammeter Y read?
AÂ Â 0Â Â Â Â Â Â BÂ Â 0.5AÂ Â Â Â Â Â C Â Â 3.5AÂ Â Â Â Â Â Â DÂ Â Â 4.0A
CorrectIncorrect - Question 101 of 139
101. Question
The diagram shows a circuit containing a d.c. power supply, a motor and a variable resistor. Three ammeters X, Y and Z shows the current in different parts of the circuit.
The reading on X is 4.0 A.
Which statement is correct?
AÂ Â The readings on Y and Z are both less than 4.0A.
B  The readings on Y and Z are both equal to 4.0A.
CÂ Â The readings on Y and Z are both greater than 4.0A.
DÂ Â The reading on Z is zero.
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102. Question
A student carries out an experiment to investigate the resistance of a resistor R. She takes a series of readings of potential difference(P.D.) and current, and plots a graph for her results.
Which circuit should she use?
Â
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103. Question
The diagram shows a torch containing two cells, a switch and a lamp.
Which is the circuit diagram for the torch?
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104. Question
A lamp is to be connected in a circuit so that the potential difference (p.d.) across it can be varied from 0 to 6V.
Which circuit would be most suitable?
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