Five resistors of given values are connected together as shown in the figure. The current in the arm $BD$ will be
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(b) This is a balanced Wheatstone bridge circuit. So potential at $B$ and $D$ will be same and no current flows through $4R$ resistance.
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A $25\, watt$, $220\, volt$ bulb and a $100\, watt$, $220\, volt$ bulb are connected in series across a $220\, volt$ lines. Which electric bulb will glow more brightly
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