# Induced charges on concentric spheres

An external charge when brought close to a conductor induces bound charges on the nearer side and free charges on the further side so that the field induced in the conductor can counterbalance the field due to the external charge,right? Now in case of 2 concentric spheres, if the outer one is charged & the inner one is grounded, then the field inside the outer sphere is zero everywhere,then no charge should be induced on the inner sphere as well,then by Gauss' Law,field in between the spheres remains zero causing zero potential difference and thus no question of capacitance comes,right? How is that possible???

• You might want to read this question and answer: physics.stackexchange.com/q/3705 Commented Sep 24, 2013 at 19:52
• What is the question? How is what possible? Commented Sep 24, 2013 at 22:03
• what i mean is that if there is no field inside the outer sphere then why charge is induced in the inner conductor at all? where is the force coming from to separate the charges in the neutral conductor?
– ARC
Commented Sep 27, 2013 at 19:56