/10 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Chapter 4 : Moving Charges and Magnetism This Quiz Contains a set of 10 Questions. The Passing Cut-off is 60%. To start the Quiz, click on the Start Button. All the Best! 1 / 10 If velocity of proton doubles, radius of its circular path in same B becomes r 2r r/2 4r 2 / 10 A stationary charge produces Only electric field Only magnetic field Both fields No field 3 / 10 A coil of area 0.1 m², 100 turns, current 1 A placed in field 0.2 T. Magnetic moment = 20 A·m² 5 A·m² 2 A·m² 10 A·m² 4 / 10 Current sensitivity of a galvanometer increases if B decreases k increases N or A increases Coil area decreases 5 / 10 The magnetic field on the axis of a current loop decreases as x² 1/x 1/x³ 1/x² 6 / 10 The magnetic field inside a long straight solenoid is Zero Inversely proportional to I Non-uniform Constant 7 / 10 Two long wires separated by distance r carrying currents I₁ and I₂ attract each other with force per unit length μ₀I₁I₂/4πr μ₀I₁I₂/πr² μ₀I₁I₂r/2π μ₀I₁I₂/2πr 8 / 10 In a MCG, coil area doubles but N halves. Deflection for same current will Double Half Remain same Four times 9 / 10 The torque on the galvanometer coil is given by τ = NIBA sinθ τ = NIBA cosθ τ = NIBA τ = kθ 10 / 10 Direction of magnetic force on a positive charge is given by Fleming’s left-hand rule Right-hand rule Cork screw rule Lenz’s law Your score is 0% Restart quiz
