# Electric Circuits 2 (IGCSE Sme 15 Questions). Tohill

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| Written by Otohill
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Otohill
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Quizzes Created: 3 | Total Attempts: 306
Questions: 15 | Attempts: 90

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• 1.

### Q1

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A

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B

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C

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D

C. C
Explanation
Parallel circuit so voltage is full 6V, V=iR to find current

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• 2.

### Q2

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A

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B

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C

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D

C. C
Explanation
Not covered yet but is needed.
A relay is a way to turn on/off a 2nd circuit

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• 3.

• A.

A

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B

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C

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D

B. B
• 4.

### Q4

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A

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B

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C

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D

B. B
Explanation
Current from P will split up to go through the 2 separate resistors, joining back together at R

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• 5.

### Q5

• A.

A

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B

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C

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D

A. A
Explanation
Brighter light = less resistance, but less resistance in this circuit means the other resistor takes more of the voltage, voltage of LDR goes down

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• 6.

### Q6

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A

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B

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C

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D

B. B
Explanation
if in series voltage will get shared out, B is only one where each bulb is in parallel

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• 7.

### Q7

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A

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B

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C

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D

B. B
Explanation
voltmeter must be connected around object you are interested in

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• 8.

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A

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B

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C

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D

C. C
• 9.

### Q9 - TOP resistor should read 20ohms

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A

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B

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C

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D

A. A
Explanation
formula 1/R = 1/R1 +1/R2 gives result of 12

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• 10.

• A.

A

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B

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C

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D

C. C
• 11.

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A

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B

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D. D
• 12.

### Q12

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B

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D

C. C
Explanation
Larger resistance = larger voltage, steals more of the power supply, the other gets less as a result

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• 13.

### Q13

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A

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B

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C

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D

B. B
Explanation
Ammeter in series with circuit, voltmeter around object you interested in

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• 14.

### Q14

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A

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B

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C

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D

A. A
Explanation
All others you cant turn each one on/off without the other being on

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• 15.

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A

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B

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C

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D