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The range R of a projectile is same when its maximum heights are h1 and h2. What is the relation between R and h1 and h2? The range R of a projectile is same when its maximum heights are h1 and h2. What is the relation between R and h1 and h2? September 21, 2020 [...]

Consider a resistor of uniform cross-sectional area connected to a battery of internal resistance zero. If the length of the resistor is doubled by stretching it, then Consider a resistor of uniform cross-sectional area connected to a battery of internal resistance zero. If the length of the resistor is doubled by stretching it then September [...]

A projectile thrown with an initial speed u and the angle of projection 15 to the horizontal has a range R. If the same projectile is thrown at an angle of 45 to the horizontal with speed 2u, what will be A projectile thrown with an initial speed u and the angle of projection 15 [...]

In the following circuit, 5 ohm resistor develops 45 J/s due to current flowing through it. The power developed per second across 12 ohm resistor is 5 ohm resistor develops 45 J/s due to current flowing through it. The power developed per second across 12 ohm resistor is In the following circuit September 21, 2020 [...]

The wiring of a house has a resistance 6 ohm. A 100 W bulb is glowing. If a geyser of 1000 W is switched on, the change in potential drop across the bulb is nearly the change in potential drop across the bulb is nearly The wiring of a house has a resistance 6 ohm. [...]

An electric bulb rated for 500 W at 100 V having a 200 – V supply. The resistance R that must be put in series with the bulb draws 500 W is An electric bulb rated for 500 W at 100 V having a 200 - V supply. The resistance R that must be put [...]

The resistance of the filament of an electric bulb changes with temperature. If an electric bulb rated 220 volt and 100 watt is connected ( 220× 8 ) volt sources, then the actual power would be The resistance of the filament of an electric bulb changes with temperature. If an electric bulb rated 220 volt [...]

For ensuring dissipation of same energy in all three resistors ( R1, R2, R3 ) connected as shown in figure, their values must be related s For ensuring dissipation of same energy in all three resistors ( R1 R2 R3 ) connected as shown in figure their values must be related s September 21, 2020 [...]

In the following circuit, 18 Ω resistor develops 2 J/sec due to current flowing through it. The power developed across 10 Ω resistance is 18 Ω resistor develops 2 J/sec due to current flowing through it. The power developed across 10 Ω resistance is In the following circuit September 21, 2020 Category: Uncategorised (JEE Advanced [...]

The resistance of the filament of a lamp increases with the increase in temperature. A lamp rated 100 W and 220 V is connected across 220 V power supply. If the voltage drops by 10 %, then the power of the lamp will be The resistance of the filament of a lamp increases with the [...]