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ALL PHYSICS DOUBTS - POST HERE !!

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rhea:
Some changes are made, one at a time.
• The d.c. supply is reversed.
• The coil is turned before switching on, so that P starts on the right and Q on the left.
• The poles of the magnet are reversed.
• The turns on the coil are increased in number.
How many of these changes make the coil rotate in the opposite direction?
A 1
B 2
C 3
D 4

8T:
Yes sure..http://www.freeexampapers.us/IGCSE/Physics/CIE/2005%20Jun/0625_s05_qp_1.pdf

holtadit:

--- Quote from: 8T on May 25, 2010, 04:28:38 pm ---Yes then what it just gives me a grean label "Loading"??

--- End quote ---

Right click the quote button and select OPEN IN NEW TAB

Snake:

--- Quote from: rhea on May 25, 2010, 04:30:30 pm ---Some changes are made, one at a time.
• The d.c. supply is reversed.
• The coil is turned before switching on, so that P starts on the right and Q on the left.
• The poles of the magnet are reversed.
• The turns on the coil are increased in number.
How many of these changes make the coil rotate in the opposite direction?
A 1
B 2
C 3
D 4

--- End quote ---

C - These 3 (• The d.c. supply is reversed.
• The coil is turned before switching on, so that P starts on the right and Q on the left.
• The poles of the magnet are reversed.)

Vin:

--- Quote from: 8T on May 25, 2010, 04:28:38 pm ---Yes then what it just gives me a grean label "Loading"??

--- End quote ---

the same happened to the member Moonlyte .. ask her she sorted it out .. ;)

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