Physics

For ensuring dissipation of same energy in all three resistors (R1,R2,R3) connected as shown in figure, their values must be related as For ensuring dissipation of same energy in all three resistors ( R1 R2 R3 ) connected as shown in figure their values must be related as November 30, 2020 Category: AIIMS Last 24 [...]

Eels are able to generate current with biological cells called electroplaques. The electroplaques in an Eel are arranged in 100 rows, each row stretching horizontally along the body of the fish containing 5000 electroplaques. The arrangement is suggestively shown below. Each electroplaques has an emf of 0.15 V and internal resistance of 0.25Ω. The water [...]

A wire of length L is drawn such that its diameter is reduced to half of its original diameter. If the initial resistance of the wire were 10Ω, its new resistance would be A wire of length L is drawn such that its diameter is reduced to half of its original diameter. If the initial [...]

An electric bulb marked 40 W and 200 V, is used in a circuit of supply voltage 100 V. Now its power is An electric bulb marked 40 W and 200 V is used in a circuit of supply voltage 100 V. Now its power is November 30, 2020 Category: AIIMS Last 24 Years Solved [...]

A metal rod consumes power P on passing current. If it is cut into two half and joined in parallel, it will consume power A metal rod consumes power P on passing current. If it is cut into two half and joined in parallel it will consume power November 30, 2020 Category: AIIMS Last 24 [...]

when a wire of resistance R is stretched and its radius becomes r/2 then its resistance will be when a wire of resistance R is stretched and its radius becomes r/2 then its resistance will be November 30, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter [...]

The equivalent resistance between A and C of the given circuit is The equivalent resistance between A and C of the given circuit is November 30, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter 22 - Current Electricity , Physics ,

A 60 W incandescent lamp operates at 120 V. The number of electrons passing through the filament per second will be A 60 W incandescent lamp operates at 120 V. The number of electrons passing through the filament per second will be November 30, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics [...]

Two resistance filaments of same length are connected first in series and then in parallel. Find the ratio of power dissipated in both cases assuming that equal current flows in the main circuit. Two resistance filaments of same length are connected first in series and then in parallel. Find the ratio of power dissipated in [...]

The resistance between the terminal point A and B of the given infinitely long circuit will be The resistance between the terminal point A and B of the given infinitely long circuit will be November 30, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter 22 - [...]