Electric Circuits 2 (IGCSE Sme 15 Questions). Tohill
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Questions and Answers
- 1.
Q1
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
C. CExplanation
Parallel circuit so voltage is full 6V, V=iR to find currentRate this question:
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- 2.
Q2
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
C. CExplanation
Not covered yet but is needed.
A relay is a way to turn on/off a 2nd circuitRate this question:
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- 3.
Q3
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
B. B -
- 4.
Q4
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
B. BExplanation
Current from P will split up to go through the 2 separate resistors, joining back together at RRate this question:
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- 5.
Q5
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
A. AExplanation
Brighter light = less resistance, but less resistance in this circuit means the other resistor takes more of the voltage, voltage of LDR goes downRate this question:
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- 6.
Q6
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
B. BExplanation
if in series voltage will get shared out, B is only one where each bulb is in parallelRate this question:
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- 7.
Q7
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
B. BExplanation
voltmeter must be connected around object you are interested inRate this question:
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- 8.
Q8
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
C. C -
- 9.
Q9 - TOP resistor should read 20ohms
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
A. AExplanation
formula 1/R = 1/R1 +1/R2 gives result of 12Rate this question:
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- 10.
Q10 SKIP
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
C. C -
- 11.
Q11
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
D. D -
- 12.
Q12
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
C. CExplanation
Larger resistance = larger voltage, steals more of the power supply, the other gets less as a resultRate this question:
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- 13.
Q13
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
B. BExplanation
Ammeter in series with circuit, voltmeter around object you interested inRate this question:
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- 14.
Q14
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
A. AExplanation
All others you cant turn each one on/off without the other being onRate this question:
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- 15.
Q15
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
A. AExplanation
If unsure put numbers for each resistor and calculate, but resistance will be smaller than either oneRate this question:
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