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Let [ε0] denote the dimensional formula of the permittivity of vacuum. If M = mass, L = length, T = Time and A = electric current, then : - physics 20130 Answer Define average power and instantaneous power. Give its units and dimensional formula. -Physics Cbse class 11 1 AnswerA current of 0.5 A is drawn by a filament of an electric bulb for 10 minutes. Find the amount of electric charge that flows through the circuit. -CBSE Physics1 AnswerThe electric and magnetic fields for a TEM wave of frequency 14 GHz -gate-ece-20111 AnswerA new system of units is proposed in which unit of mass is α kg, unit of length is β m and unit of time is γ s. How much will 5 J measure in this new system? -Physics Cbse class 11 1 Answer Several electric bulbs designed to be used on a 220 V electric supply line, are rated 10 W. How many lamps can be connected in parallel with each other across the two wires of 220 V line if the maximum allowable current is 5 A? -CBSE Physics 1 AnswerWhy is an alternating current considered to be advantageous over direct current for long range transmission of electric energy? -CBSE physics class 101 AnswerA uniform cylinder of length L and mass M having cross - sectional area A is suspended, with its length vertical, from a fixed point by a massless spring, such that it is half submerged in a liquid of density σ at equilibrium position. The extension x0 of the spring when it is in equilibrium is : - physics 20130 Answer Mark True or False for following statements: (Science-Ncert class 6)1 AnswerYou are given following current-time graphs from two different sources: 2009 CBSE Physic class 101 AnswerThe potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 120 V? -CBSE Physics 1 AnswerAn electric iron of resistance 20 Ω takes a current of 5 A. Calculate the heat developed in 30 s. -CBSE Physics 1 AnswerAn electric bulb is connected to a 220 V generator. The current is 0.50 A. What is the power of the bulb? -CBSE Physics 1 AnswerIn a time - of - flight mass spectrometer if q is the charge and m is the mass of the ionized species, then the time of fligh t is proportional to GATE-Instrumentation-Engineering-20141 Answer Two lamps, one rated 100 W at 220 V, and the other 60 W at 220 V, are connected in parallel to electric mains supply. What current is drawn from the line if the supply voltage is 220 V? -CBSE Physics 1 AnswerWhat is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R in a circular orbit at an altitude of 2R ? - physics 20130 AnswerFill in the blanks. cbse-class8-physics-20151 AnswerThe path through which electric current flows: a) Plastic b) Cloth c) Iron d) Glass -NCERT CBSE CLASS 6TH SCIENCE 20160 AnswerA household uses the following electric appliances -CBSE physics class 101 AnswerAn electric iron consumes energy at a rate of 840 W when heating is at the maximum rate and 360 W when the heating is at the minimum. The voltage is 220 V. What are the current and the resistance in each case? -CBSE Physics 1 Answer