Objective Questions Short notes Objective questions (Answers are given below) A capacitor consists of two(a) insulation separated by a dielectric(b) conductors separated by an insulator(c) ceramic plates and one mica disc(d) silver-coated insulators The capacitance of a capacitor is NOTinfluenced by(a) plate thickness(b) plate area(c) plate separation(d) nature of the dielectric A capacitor that stores … Read more
Objective Questions Short notes Objective questions (Answers are given below) The unit of absolute permittivity of a medium is(a) joule/coulomb(b) newton-metre(c) farad/metere(d) farad/coulomb If relative permittivity of mica is 5, its absolute permittivity is(a) 5 ε0 (b) 5/ε0(b) 5/ε0 (c) ε0/5 (d) 8.854 × 10−12 Two similar electric charges of 1 C each are placed … Read more
Objective Questions Short notes Objective questions (Answers are given below) If a 220 V heater is used on 110 V supply,heat produced by it will be —— as much.(a) one-half (b) twice(c) one-fourth (d) four times For a given line voltage, four heating coilswill produce maximum heat when connected(a) all in parallel (b) all in … Read more
What is electron drift velocity ? Electron Drift Velocity : Suppose that in a conductor, the number of free electrons available per m3 of the conductor material is n and let their axial drift velocity be ν metres/second. In time dt, distance travelled would be ν × dt. If A is area of cross-section of … Read more
General Reserves The purpose for such reserves are created is not specified. It is also termed as free reserve because the management can freely utilise it for any purpose. General reserve strengthens the financial position of the business. Specific reserve Specific reserve is the reserve, which is created for some specific purpose and can be … Read more