(a) A torch bulb is rated 2.5 V and 750 mA. Calculate
(i) its power,
(ii) its resistance,
(iii) the energy consumed if this bulb is lighted for 4 hours.
(b) Two identical resistors, each of resistance 2 Ohm, are connected in torch
(i) in series and
(ii) in parallel, to a battery of 12 volts. Calculate the ratio of power consumed in two