Physics
A cell of e.m.f 1.5 V and internal resistance 1 Ω is connected to two resistors of resistances 6 Ω and 3 Ω in parallel and a resistor of resistance 2 Ω in series as shown in the diagram.
Calculate the current through:
(a) 2 Ω resistor
(b) 6 Ω resistor
Related Questions
The diagram given below shows a bulb connected by dual control switches. Observe the diagrams and answer the questions that follow.
(a) Which switch can successfully turn the bulbs ON or OFF? (Circuit A, Circuit B, or both)
(b) At present, in which circuit is the bulb glowing?
(c) If the L and N wires are swapped in the circuit (your answer to (b)), will the circuit still function?
Study the diagram and answer the questions that follow:
(a) Name the nuclear process displayed in the diagram.
(b) Is it possible to conduct this process at room temperature?
(c) Mass of reactants …………… mass of the products.
[Fill in the blank using <, > or =]
A spirit lamp supplying heat at a rate of 50 W is used to melt 0.025 kg of ice at 0 °C taken in a container. If all the ice in the container is melted in 168 s, then what is the specific latent heat of fusion of ice?
(The heat capacity of the container is negligible.)
(a) State the principle of calorimetry.
(b) Why should the surface of the calorimeter be polished?
(c) Why should the calorimeter be made of a material of low specific heat capacity?