IG Phy -Circuits Compunents (II)
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Question 1 of 11
1. Question
1 point(s)The current through a motor with a resistance of 12 Ω and a battery of 24 V is 1.0 A when a variable resistor is set to 12 Ω.
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Question 2 of 11
2. Question
1 point(s)The voltage across the motor will be 0 V when the variable resistor is set to 0 Ω.
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Question 3 of 11
3. Question
1 point(s)The current in a series circuit is the same throughout.
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Question 4 of 11
4. Question
1 point(s)In a potential divider circuit, the p.d. across each resistor is proportional to its resistance.
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Question 5 of 11
5. Question
1 point(s)The p.d. across a resistor is always half the supply voltage when using equal resistors in a potential divider circuit.
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Question 6 of 11
6. Question
1 point(s)A relay is an electromagnet that can operate multiple switch contacts.
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Question 7 of 11
7. Question
1 point(s)The contacts in a relay never join when the electromagnet is energized.
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Question 8 of 11
8. Question
1 point(s)An LDR\’s resistance decreases when the illumination reduces.
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Question 9 of 11
9. Question
1 point(s)When the illumination is low, the relay will close the contact in a light-operated circuit.
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Question 10 of 11
10. Question
1 point(s)The circuit controlled by the relay needs to have a direct connection to the relay coil circuit.
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Question 11 of 11
11. Question
1 point(s)When the resistance of the whole circuit is 12 Ω and the variable resistor is set to 12 Ω, the total resistance in the circuit is 24 Ω.
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