1. Which of the following statements is/are correct?
a. The current in a RIX; series circuit leads the voltage by 90° across an inductor and lags by 90° the voltage across the capacitor
b. Inductive and capacitive reactances are measured units in Ohms and impedances is measured in henrys.
c. In an RI,C parallel circuit, the capacitor stores energy in an electric field and an inductor stores energy in a magnetic field.
d. The reactance of an inductor decreases with frequency and reactance of a capacitor increases with frequency.
2. A bar magnet is held above the center of a conducting wire loop in a horizontal plane with the north end of the magnet toward the loop. The magnet is dropped.
What is the direction of the current
a. Clockwise
b. Counter-clockwise t around the wire loop while the magnet is falling toward the loop.
c. unable to determine the direction
d. no direction no current is induced.
3. Consider a coil in a magnetic field coil? as shown in the figure below.: In which ways can an emf be induced in the
a. By changing the magnetic field.
b. By changing the area of the loop in the field.
c. By rotating the loop clockwise in the direction C.
d. By moving the loop inside the field along A or along B without distortion of the loop.
4. Which of the following statements is/are true about electromagnetic waves ?
a. The waves travel at a speed of 3.00 x 108 m/s in any material.
b. Longer wavelength correspond to radio waves and higher the frequencies to gamma rays.
c. The higher the wavelength the larger the amount of energy carried by the wave.
d. The energy carried by electromagnetic waves is stored in their varying electric and magnetic field.
Attachment:- physics.docx