The four arms of a Wheatstone bridge have resistances as shown in the figure. A galvanometer of $15 \Omega$ resistance is connected across BD. Calculate...
JEE MainPhysicsEasy
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QJEE-MAIN 2021
Two cells of emf 2E and E with internal resistance r1 and r2 respectively are connected in series to an external resistor R (see figure)....
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QJEE MAIN 2021
The energy dissipated by a resistor is 10 mJ in 1 s when an electric current of 2 mA flows through it. The resistance is...
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QJEE Main 2019
A resistance is shown in the figure. Its value and tolerance are given respectively by
A copper wire is stretched to make it 0.5% longer. The percentage change in its electrical resistance if its volume remains unchanged is
JEE MainPhysicsEasy
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QJEE MAIN 2021
A resistor develops 500 J of thermal energy in 20s when a current of 1.5 A is passed through it. If the current is increased...
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Q_JEE_MAIN_2021
The equivalent resistance of series combination of two resistors is 's'. When they are connected in parallel, the equivalent resistance is 'p'. If s =...
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QJEE_MAIN_2021
A current of 10 A exists in a wire of crosssectional area of $5 \mathrm{~mm}^2$ with a drift velocity of $2 \times 10^{-3} \mathrm{~ms}^{-1}$. The...
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QJEE MAIN 2021
The voltage across the $10 \Omega$ resistor in the given circuit is $x$ volt. ...
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