71. The ratio of intensity of magnetisation to the magnetisation force is known as A. flux density B. susceptibility C. relative permeability D. none of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
72. What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart A. 22 x 10-8 N B. 22 x 10-7 N C. 22 x 10-6 N D. 22 x 10-5 N Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
73. The commonly used material for shielding or screening magnetism is A. copper B. aluminium C. soft iron D. brass Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
74. Ferrites are materials. A. paramagnetic B. diamagnetic C. ferromagnetic D. none of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
75. The uniform magnetic field is A. the field of a set of parallel conductors B. the field of a single conductor C. the field in which all lines of magnetic flux are parallel and equidistant D. none of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
76. Core of an electromagnet should have A. low coercivity B. high susceptibility C. both of the above D. none of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
77. Fleming's left hand rule is used to find A. Direction of magnetic field due to current carrying conductor B. Direction of flux in a solenoid C. Direction of force on a current carrying conductor in a magnetic field D. Polarity of a magnetic pole Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
78. Ferrites are a sub-group of A. non-magnetic materials B. ferro-magnetic materials C. paramagnetic materials D. ferri-magnetic materials Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
79. The force between two long parallel conductors is inversely proportional to A. Radius of conductors B. Current in one conductor C. Product of current in two conductors D. Distance between the conductors Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
80. Out of the following statements, concerning an electric field, which statement is not true? A. The electric intensity is a vector quantity B. The electric field intensity at a point is numerically equal to the force exerted upon a charge placed at that point C. An electric field is defined as a point in space at which an electric charge would experience a force D. Unit field intensity in the exertion of a force of one newton on a charge of one coulomb Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
