18. The most accurate instrument for comparing the e.m.f of two cells is the..
19. Which of the following devices may be used to convert Ac to
DC(a) A reheostat (b) A diode (c) An alternator (d) A resistor.
20. In a hollow conductor, the charge is discharge on the end part of the outer surface of the conductor because of..... (a) force
19. Which of the following devices may be used to convert Ac to
DC(a) A reheostat (b) A diode (c) An alternator (d) A resistor.
20. In a hollow conductor, the charge is discharge on the end part of the outer surface of the conductor because of..... (a) force
Answers
Answered by
GPT 3.5
of repulsion between like charges (b) force of attraction between unlike charges (c) induction (d) polarization.