1. Magnetic forces (F) on moving charges (q) is (b) F=qdxB (d) None 2. Gauss\'s
ID: 1882139 • Letter: 1
Question
1. Magnetic forces (F) on moving charges (q) is (b) F=qdxB (d) None 2. Gauss's law of magnetism is? (a) $ B.dA = 0 (b) $B. dA 1 (d) None 3. Speed (v) of a charged particle in a magnetic field (B) has the formula (a) qBR/m (b) qBRm (c) qBR?/m (d) None 4. Applications of motion of charged particles is/are (a) Mass spectrometer (b) Thompson's e/m experiment (c) Both (d) None 5. Magnetic force (F) due to a conductor of length () is (a) 4dF= Idl × B (d) None 6. Torque (r) on a current loop is (b)324xB The potential energy U of a magnetic moment in a magnetic field B (b) -uBCosø (d) None 7· (c) uBCos (d) None DC motor works on the principle of (a) Work (b) Potential 8. (c) Torque (d) None
Explanation / Answer
1.
F= qv x B
Option (b) is correct
=======
2. Gauss law in magnetism is
B. dA= 0
Option (a) is correct
=======
3.
Az per equilibrium of forces
qvB= mv^2/r
v= qBr/m
Option (b) is correct
========
4.
None of them is correct.
========
5. F= i dl x B
Option (b) is correct
=========
Plz post other problem seperately
Comment in case any doubt . Goodluck
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.