Q1 Two free parallel wires carrying currents in the same direction :
- (a) attract each other
- (b) repel each other
- (c) do not effect each other
- (d) get rotated to be perpendicular to each other
- (a) attract each other
Q2 Value of `\frac{μ_{0}}{4π}` is given by :
- (a) `10^{-7}`
- (b) `10^{-5}`
- (c) `10^{-4}`
- (d) `10^{-6}`
- `10^{-7}`
Q3 Force on a current carrying conductor placed inside a magnetic field :
- (a) F=BILsinθ
- (b) F= ma
- (c) F=B/LI
- (d) `\frac{μ_{0}}{4π}` BILsinθ
- a) F=BILsinθ
Q4 Two parallel wires carrying currents in the same direction attract each other because of :
- (a) Potential difference between them
- (b) Mutual induction between them
- (c) Electric forces between them
- (d) Magnetic forces between them
- (d) Magnetic forces between them
Q5 The direction of magnetic force experienced by a charged particle perpendicular to the plane containing v (velocity) and B (Magnetic field) (True/False)
- (a) True
- (b) False
- (a) True
Q6 The magnetic field which is parallel to the plane of the loop or coil is called radial magnetic field.
- (a) True
- (b) False
- (a) True
Q7 The net torque on current loop in a uniform magnetic field is zero.
- (a) True
- (b) False
- (b) False
Q8 The units of magnetic moment are
- (a) `Am^{-2}`
- (b) A m
- (c) `Am^{-1}`
- (d) `Am^{2}`
- (d) `Am^{2}`
Q9. Moving coil galvanometer is used for the measurement of
- (a) Very small electric current
- b) Large electric current
- c). Speed
- d). Length
- (a) Very small electric current
Q10 To convert galvanometer into ammeter which one is connected with the coil
- a) High resistance wire in series
- b) Low resistance wire in parallel
- c) High resistance wire in parallel
- d) Low resistance wire in series
- b) Low resistance wire in parallel
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