TOP-10 LATEST CURRENT AFFAIRS 2021 IN ENGLISH#youtube#viralvideo #viral

UPSC/PCS 2020 CURRENT AFFAIR Part 10

CURRENT AFFAIR 2019-20 Q & A SESSION Part 10

Two circular loops are parallel, coaxial, and almost in contact ,1.00mm apart. Each loop is 10.0 cm in radius. The loop carries a counterclockwise current of 140A. (a) Calculate the magnetic force exerted by the bottom loop on the top loop. (b) The upper loop has a mass of 0.0210kg. Calculate its acceleration, assuming that the only forces acting on it are the force in part (a) and the gravitational force.

The earth's surface has a negative surface charge density of 10^(-9) Cm^(-2) . The potential difference of 400 kV between the top of the atmosphere and the surface results (due to low conductivity of the lower atmosphere) in a current of only 1800 A over the entire globe. If there were no mechanism of sustaining atmosphereic electric field , how much time (roughly) would be required to neutralise the earth's surface ? (This never happens in practice because there is a mechanism to replenish electric charges namely the continual thunder storms and lightning in different parts of the globe). Radius of the earth = 6.37 xx 10^(6) m .

A vertical off-shore structure is built to withstand a a maximum stress of 10^(9)Pa . Is the structure suitabel for putting upon top of an oil well in bombay high? Take the depth of the sea to be roughly 3 km, and ignore oceam currents.

A Triode is operating at E_(c) = -4V, E_(b) = 175 V and l_(b) =10mA. Around this operating point, the plate characteristics are linear and the parameters are mu =20, r_(p) = 8 Omega . E is changed top -6V . To obtain the same plate current the value of E_(b) should be

In a certain code, the letters of English alphabet (consonants and vowels) are coded as given for some words. The numeric code for each letter is given in bracket under coded form and corresponds to the letter in the word in the same serial order. Study the coded forms of the given words and find out the rules for their codification. Applying those rules, answer the questions that follow in two sets. Find out which of the words denoted by (A), (B) and (C) can be the correct word (s) for the codes given against each question number: [5] [10] [5] (A) MAN " " (B) TOP " " (C) CAT