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If  \( R_g \) in the circuit shown in figure is variable between  \( 20\Omega \)  and  80 \( \Omega \) then maximum power transferred to the load  \( R_L \) will be-
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Important Questions on Physics

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Which finger shows the direction of current in Fleming’s left-hand rule?
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What will be the direction of the magnetic field at the very bottom point of a horizontal power line, where the current flows from east to west when viewed from the west end?


 

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The rating for a fuse used in a household electric circuit is provided on the basis of:
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1 horse power is equal to approximately ______ watts.
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Which of the following is a landlocked country?

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The flow of _____ is anti–clockwise in the given circuit:

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