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QJEE MAIN 2021
What equal length of an iron wire and a copper-nickel alloy wire, each of 2 mm diameter connected parallel to give an equivalent resistance of...
JEE MainPhysicsEasy
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QJEE-MAIN 2021
An electric bulb of 500 watt at 100 volt is used in a circuit having a 200 V supply. Calculate the resistance R to be...
JEE MainPhysicsEasy
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QJEE MAIN 2021
In the given figure, the emf of the cell is 2.2 V and if internal resistance is $0.6 \Omega$. Calculate the power dissipated in the...
JEE MainPhysicsEasy
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QJEE MAIN 2021
For the circuit shown, the value of current at time t = 3.2 s will be _____A.
JEE MainPhysicsEasy
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QJEE-MAIN 2021
If you are provided a set of resistances $2 \Omega, 4 \Omega, 6 \Omega$ and $8 \Omega$. Connect these resistances so as to obtain an...
JEE MainPhysicsEasy
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QJEE MAIN 2021
The resistance of a conductor at 15ºC is 16 $\Omega$ at 100ºC is 20$\Omega$ What will be the temperature coefficient of resistance of the conductor?
JEE MainPhysicsEasy
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QJEE MAIN 2021
A $16 \Omega$ wire is bend to form a square loop. A 9 V supply having internal resistance of $1 \Omega$ is connected across one...
JEE MainPhysicsEasy
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QJEE-MAIN 2021
Two resistors $\mathrm{R}_1=(4 \pm 0.8) \Omega$ and $\mathrm{R}_2=(4 \pm 0.4) \Omega$ are connected in parallel. The equivalent resistance of their parallel combination will be :
JEE MainPhysicsEasy
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QJEE MAIN 2021
The given potentiometer has its wire of resistance $10 \Omega$. When the sliding contact is in the middle of the potentiometer wire, the potential drop...
JEE MainPhysicsMedium
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QJEE-MAIN 2021
An electric bulb rated as 200 W at 100 V is used in a circuit having 200 V supply. The resistance ‘R’ that must be...
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