3.206. A coil of radius r = 25 cm wound of a thin copper wire of length l=500 m rotates with an angular velocity omega= 300 rad/s about its axis. The coil is connect- ed to a ballistic galvanometer by means of sliding contacts. The total resistance of the circuit is equal to R=21ohm. Find the specific charge of current carriers in copper if a sudden stoppage of the coil makes a charge q=10 nC flow through the galvano- meter.
Moderation Team
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