ohms law by pavan
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objective type ques in ohms lawTRANSCRIPT
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Home Aptitude Logical Reasoning Verbal Ability GK Puzzles Engineering Interview Online TestElectrical Engineering :: Ohm's Law@ : Home > Electrical Engineering > Ohm's Law > General Questions
Exercise General Questions True or False"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."- Albert Einstein1.An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximately
A.385
B.38.5
C.3.1
D.31
Answer & ExplanationAnswer: Option DExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
2.If 750 A is flowing through 11 k of resistance, what is the voltage drop across the resistor?
A.8.25 V
B.82.5 V
C.14.6 V
D.146 V
Answer & ExplanationAnswer: Option AExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
3.The formula to find I when the values of V and R are known is
A.I = VR
B.I = R/V
C.V = IR
D.I = V/R
Answer & ExplanationAnswer: Option DExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
4.A resistor is connected across a 50 V source. What is the current in the resistor if the color code is red, orange, orange, silver?
A.2 mA
B.2.2 mA
C.214 mA
D.21.4 mA
Answer & ExplanationAnswer: Option BExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
5.Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k of resistance?
A.27.2 mA
B.59 mA
C.5.9 mA
D.590 mA
Answer & ExplanationAnswer: Option CExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
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Exercise General Questions True or False"I do not seek. I find."- Pablo Picasso6.How much resistance is required to limit the current from a 12 V battery to 3.6 mA?
A.3.3 k
B.33 k
C.2.2 k
D.22 k
Answer & ExplanationAnswer: Option AExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
7.What is the voltage source for a circuit carrying 2 A of current through a 36 resistor?
A.1.8 V
B.18 V
C.7.2 V
D.72 V
Answer & ExplanationAnswer: Option DExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
8.What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source?
A.9.7
B.97
C.23
D.230
Answer & ExplanationAnswer: Option DExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
9.How much voltage is needed to produce 2.5 A of current through a 200 resistor?
A.50 V
B.500 V
C.80 V
D.8 V
Answer & ExplanationAnswer: Option BExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
10.When there is 12 mA of current through a 1.2 k resistor, the voltage across the resistor is
A.14.4 V
B.1.4 V
C.100 V
D.10 V
Answer & ExplanationAnswer: Option AExplanation:V = IR (Ohms Law)= 12 X 10-3 X 1.2 X 10 3= 12 X 1.2 = 14.4 VView Answer Workspace Report Discuss in Forum
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Home Aptitude Logical Reasoning Verbal Ability GK Puzzles Engineering Interview Online TestElectrical Engineering :: Ohm's Law@ : Home > Electrical Engineering > Ohm's Law > General Questions
Exercise General Questions True or False"Nothing in life is to be feared, it is only to be understood."- Marie Curie11.A resistance of 3.3 M is connected across a 500 V source. The resulting current is approximately
A.15.1 A
B.151 A
C.66 mA
D.660 mA
Answer & ExplanationAnswer: Option BExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
12.You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed?
A.9 V
B.900 mV
C.0 V
D.18 V
Answer & ExplanationAnswer: Option AExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
13.The current through a flashlight bulb is 40 mA and the total battery voltage is 4.5 V. The resistance of the bulb is approximately
A.112
B.11.2
C.1.2
D.18
Answer & ExplanationAnswer: Option AExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
14.If you wish to increase the amount of current in a resistor from 120 mA to 160 mA by changing the 24 V source, what should the new voltage setting be?
A.8 V
B.320 V
C.3.2 V
D.32 V
Answer & ExplanationAnswer: Option DExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
15.If 24 V are applied across a resistor and there are 10.9 mA of current, the resistance is
A.220 k
B.22 k
C.2.2 k
D.220
Answer & ExplanationAnswer: Option CExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
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Exercise General Questions True or False"Everything you can imagine is real."- Pablo Picasso16.How much resistance is needed to draw 17.6 mA from a 12 volt source?
A.212
B.6.8 k
C.68
D.680
Answer & ExplanationAnswer: Option DExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
17.How much current is produced by a voltage of 18 kV across a 15 k resistance?
A.1.2 A
B.12 A
C.120 mA
D.12 mA
Answer & ExplanationAnswer: Option AExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
18.A current of 200 A through a 6.8 k resistor produces a voltage drop of
A.34.4 V
B.340 V
C.13.6 V
D.1.36 V
Answer & ExplanationAnswer: Option DExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
19.Four amperes of current are measured through a 24 resistor connected across a voltage source. How much voltage does the source produce?
A.960 V
B.9.6 V
C.96 V
D.8 V
Answer & ExplanationAnswer: Option CExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
20.Twelve volts are applied across a resistor. A current of 3 mA is measured. What is the value of the resistor?
A.4
B.400
C.4 k
D.4.4
Answer & ExplanationAnswer: Option CExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
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Exercise General Questions True or False"Act well your part; there all honor lies."- Alexander Pope21.When 12 V are applied across a 68 resistor, the current is
A.816 mA
B.17.6 mA
C.176 mA
D.8.16 mA
Answer & ExplanationAnswer: Option CExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
22.Approximately how much current flows through a 3.3 M resistor across a 30 V source?
A.9 A
B.90 A
C.900 A
D.9000 A
Answer & ExplanationAnswer: Option AExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
23.A 120 V lamp-dimming circuit is controlled by a rheostat and protected from excessive current by a 3 A fuse. To what minimum resistance value can the rheostat be set without blowing the fuse? Assume a lamp resistance of 20 ohms.
A.40
B.4
C.2
D.20
Answer & ExplanationAnswer: Option DExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
24.What is the approximate filament resistance of a light bulb if it operates from a 110 V source and 0.6 A of current is flowing?
A.183
B.18.3
C.66
D.6.6
Answer & ExplanationAnswer: Option AExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
25.What is the approximate resistance of a rheostat if the voltage source is 18 V and the current is 220 mA?
A.8.2 k
B.820
C.8.2
D.82
Answer & ExplanationAnswer: Option DExplanation:No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum
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