- #1
jsmith613
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Do these two answers contradict each other:
Q1) Four students are discussing a circuit. The circuit is in series and contains a lamp, an ammeter and a 10V battery.
Andy: the current in the lamp consists of negative charges moving from the negative batter terminal towards the positive battery terminal
Brandon: THe current in the lamp is a mixture of positive and negative ions
Charlie: the current in the lamp consists of negative charges moving towards the positive battery terminal and positive charges moving towards the negative battery terminal
Denzil: The lamp lights up when two different flows of charges crash into eachoher
Only one sutdent is correct
Answer: Andy is correct
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Q2)
Darren uses a solar panel to charge a battery.
The circuit consists of two cells, one positive and the other negative.
Diagram: http://s359.photobucket.com/albums/oo40/jsmith613/?action=view¤t=AdQ.png
The current in the wire is a flow of
a) negative electrons into the positive terminal of the battery
b) negative electrons out of the positive terminal of the battery
c) positive electrons into the positive terminal of the battery
d) positive electrons out of the positive terminal of the battery
Answer: B
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Firstly, don't the answer from Q1 and Q2 contradict each other
Secondly, doesn't the diagram in Q2 contradict the answer
NOTE: these questions are from papers in the same exam series
Q1) Four students are discussing a circuit. The circuit is in series and contains a lamp, an ammeter and a 10V battery.
Andy: the current in the lamp consists of negative charges moving from the negative batter terminal towards the positive battery terminal
Brandon: THe current in the lamp is a mixture of positive and negative ions
Charlie: the current in the lamp consists of negative charges moving towards the positive battery terminal and positive charges moving towards the negative battery terminal
Denzil: The lamp lights up when two different flows of charges crash into eachoher
Only one sutdent is correct
Answer: Andy is correct
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Q2)
Darren uses a solar panel to charge a battery.
The circuit consists of two cells, one positive and the other negative.
Diagram: http://s359.photobucket.com/albums/oo40/jsmith613/?action=view¤t=AdQ.png
The current in the wire is a flow of
a) negative electrons into the positive terminal of the battery
b) negative electrons out of the positive terminal of the battery
c) positive electrons into the positive terminal of the battery
d) positive electrons out of the positive terminal of the battery
Answer: B
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Firstly, don't the answer from Q1 and Q2 contradict each other
Secondly, doesn't the diagram in Q2 contradict the answer
NOTE: these questions are from papers in the same exam series