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Author Topic: physics 9702 (cie) question  (Read 1092 times)

Offline Sue T

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physics 9702 (cie) question
« on: December 02, 2009, 12:21:37 pm »
its a past paper question
MJ 06 paper 2
question 7 (b)

in the mark scheme it says:
shorted lamp A would cause damage to the supply/lamps
/blow fuse in supply

i dunno y theyre talkin bout lamp A now  ???
« Last Edit: December 02, 2009, 12:27:10 pm by Sue T »
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Offline astarmathsandphysics

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Re: physics 9702 (cie) question
« Reply #1 on: December 02, 2009, 12:31:00 pm »
Lamp A is in series with Lamps B and C so the current through A is the sum of the currents through B and C. Lamp A will probably be the most likely to be damaged.
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Offline halosh92

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Re: physics 9702 (cie) question
« Reply #2 on: December 02, 2009, 12:50:25 pm »
Quote from: astarmathsandphysics on December 02, 2009, 12:31:00 pm
Lamp A is in series with Lamps B and C so the current through A is the sum of the currents through B and C. Lamp A will probably be the most likely to be damaged.

ive got the same doubt i dont get it either ???
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Offline astarmathsandphysics

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Re: physics 9702 (cie) question
« Reply #3 on: December 02, 2009, 01:13:21 pm »
The only way from one supply terminal to the other is through lamp A. It will experience max current so be most likely to blow.
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Offline halosh92

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Re: physics 9702 (cie) question
« Reply #4 on: December 02, 2009, 04:18:32 pm »
Quote from: astarmathsandphysics on December 02, 2009, 01:13:21 pm
The only way from one supply terminal to the other is through lamp A. It will experience max current so be most likely to blow.
oh ok thx alot sir :D
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Offline Sue T

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Re: physics 9702 (cie) question
« Reply #5 on: December 04, 2009, 12:29:02 pm »
i forgot 2 say thank you ;D
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