Physics
(i) Name the transformer used in the power transmitting station of a power plant.
(ii) What type of current is transmitted from the power station?
(iii) At what voltage is this current available to our household?
Related Questions
A battery of e.m.f. 12 V and internal resistance 2 Ω is connected with two resistors A and B of resistance 4 Ω and 6 Ω respectively joined in series.
Find:
(i) Current in the circuit.
(ii) The terminal voltage of the cell.
(iii) The potential difference across 6 Ω Resistor.
(iv) Electrical energy spent per minute in 4 Ω Resistor.
(i) Name the phenomenon involved in tuning a radio set to a particular station.
(ii) Define the phenomenon named by you in part (i) above.
(iii) What do you understand by loudness of sound?
(iv) In which units is the loudness of sound measured?
(i) Which particles are responsible for current in conductors?
(ii) To which wire of a cable in a power circuit should the metal case of a geyser be connected?
(iii) To which wire should the fuse be connected?
Arrange α, β and γ rays in ascending order with respect to their
(i) Penetrating power.
(ii) Ionising power.
(iii) Biological effect.