12th Class Physics MCQS Electromagnetism Online Test 4

if-the-number-of-turns-become-double-but-length-remain-same-2-c-then-magnetic-field-in-the-solenoid-become-3-a_-_double,in-current-carrying-long-solenoid-the-magnetic-field-produced-does-not-depend-upon-3-a_-_the-radius-of-solenoid,in-order-to-increase-sensitivity-of-galvanometer-the-value-of-c-may-be-3-a_-_decrease,is-correct-relation-3-a_-_it-3-d-10-3-csup-3-e-4-3-c-2-fsup-3-eg,lorentz-force-is-given-by-3-a_-_q-28-3-fe-2-b-3-fv-c-3-97-3-fb-29,magnetic-flux-density-at-a-point-due-to-current-carrying-coil-is-determined-by-3-a_-_ampere-27-s-law,magnetic-flux-density-is-measured-in-3-a_-_weber-2-fm-3-csup-3-e-2-3-c-2-fsup-3-e,magnetic-induction-can-be-measured-in-units-of-3-a_-_all-of-above,magnetic-lines-of-force-are-3-a_-_imaginary,s-i-unit-of-e-is-nc-3-f-1-and-that-of-b-is-na-3-f-1-m-3-f-1-then-the-unit-of-eb-is-3-a_-_ms-3-csup-3-e-1-3-c-2-fsup-3-e,sensitivity-of-a-galvanometer-can-be-increased-by-3-a_-_decreasing-the-value-of-tersional-couple,the-brightness-of-sport-on-cro-screen-is-controlled-by-3-a_-_grid,the-brightness-of-the-spot-on-cro-screen-is-controlled-by-3-a_-_grid,the-charges-moving-perpendicular-to-magnetic-field-experience-force-3-a_-_maximum,the-cro-is-used-for-3-a_-_displaying-wave-form-of-given-voltage,the-e-2-fm-of-a-neutron-is-3-a_-_zero,the-effective-way-to-increase-the-sensitivity-of-moving-coil-galvanometer-is-3-a_-_increase-the-magnetic-field,the-field-inside-a-solenoid-is-given-by-3-a_-_3-f-3-csub-3-e-0-3-c-2-fsub-3-en-i,the-force-on-current-carrying-conductor-placed-in-magnetic-field-is-expressed-by-3-a_-_f-3-f-3-dil-3-f-c-3-97-b-3-f,the-function-of-three-anodes-in-a-c-r-o-is-3-a_-_to-accelerate-and-focus-the-electrons,two-parallel-wires-carrying-curent-in-the-same-direction-3-a_-_attract-each-other,which-one-of-the-following-resistance-is-used-to-convert-a-galvanometer-into-an-ammeter-3-f_-_shunt