 # Electrical Engineering Objective Questions { Electromagnetism }

141. If ill is the polarization vector and k is the direction of propagation of a plane electromagnetic wave, then

142. If the vector A and le are conservative, then

143. The value of dl along a circle of radius 2 units is

144. A magnetic field B = (iix + 2iy - 4a) exists at a point. If a test charge moving with a velocity, = vo (3ax - y 2) experiences no force at a certain point, the electric field at that point will be

145. Consider the following statements associated with the basic electrostatic properties of ideal conductors I. The resultant field inside is zero 2. The net charge density in the interior is zero 3. Any net charge density in the interior is zero 4. The surface is always an equipotential 5. The field just outside is zero. Of these statements

146. Consider the following statements associated with the basic electrostatic properties of ideal conductors 1. Capacitance is proportional to area of plates 2. Capacitance is inversely proportinal to distance of separation of plates 3. The dielectric material is in a state of compression. Of these statements

147. When a lossy capacitor with a dielectric of permittivity E and conductivity a operates at a frequency co, the loss tangent for the capacitor is given by

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