Question

a ie the circuit shown, the capacitor is initally uncharged, and -40 v. At time r-O,switch S is 40 V 0.50 M ? IE r denotes the time constant, find the charge on capacitor whenr 4 cvle n) If t denotes the time constant, find the approximate current through the resistor when b) A particle with charge 6.00 ?C initially moves with vel If it encounters a a uniform magnetic field find the magnetic force vector on the particle. 7-(2.0× 106 m/sr + (3.0× 106m/s B (0.030T)-(0.15 Dj : (0.5?-i) + (-1,2)(2)
Please tell me what I did wrong or why I got -4 thanks!
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