Physics
Hema uses two appliances in her home. One appliance is rated at 100 W and operates at 220 V, while the other appliance is rated at 60 W and also operates at 220 V. These appliances are connected to the electrical main supply in both series and parallel configurations, as shown in the figure 1 and 2.
(a) Calculate the total power consumption when the two appliances are connected in series.
(b) Calculate the total power consumption when the two appliances are corrected in parallel.
(c) Which configuration results in higher total power consumption, series or parallel?
Related Questions
(a) After emission of an α-particle and two β-particles from an element 92P238, we get another element bRa. What is the relation between P and R ?
(b) Name the radiation which is used in carbon dating.
(a) Name the phenomenon involved in tuning a radio set to a particular station
(b) Define the phenomenon named by you in part (a) above.
(c) What do you understand by loudness of sound?
(d) In which unit is the loudness of sound measured?
(a) State two common properties of γ-rays and X-rays.
(b) Name two main sources of nuclear radiations. How are the nuclear radiations harmful?
Five resistors of different resistances are connected together as shown in the figure.
A 12 V battery is connected to the arrangement.
Calculate
(a) total resistance in the circuit.
(b) the total current flowing in the circuit.