Five balls numbered 1 to 5 are suspended using separate thread pairs ( 1,2 ) ( 2,4 ) ( 4,1 ) show electrostatic attraction while pairs ( 2,3 ) ( 4,5 ) show repulsion therefore ball1 must beAnswer says that 1 is neutral but if that is so , how can (1,2), (4,1) show attraction ?? Even if induction occurs , how can we conclude unless the configuration is given ??
Vishnu , 6 Years ago
Grade 11
1 Answers
Arun
Last Activity: 6 Years ago
Here the charges on the balls 2 and 3 are similar. Also that on 4 and 5 is similar. But the balls 2 and 4 attract each other. Therefore, if the charge on ball 2 is positive, then that on ball 5 must be negative. But ball 1 is attracted both by balls 2 and 5. This is possible only if ball 1 is ‘neutral’.
Regards Arun (askIITians forum expert)
Provide a better Answer & Earn Cool Goodies
Enter text here...
LIVE ONLINE CLASSES
Prepraring for the competition made easy just by live online class.
Full Live Access
Study Material
Live Doubts Solving
Daily Class Assignments
Ask a Doubt
Get your questions answered by the expert for free