# Three resistances each equal to 'r' are connected as shown in the figure. The equivalent resistance between A and B is (a)   (b)   (c)   (d)

## Question ID - 154455 :- Three resistances each equal to 'r' are connected as shown in the figure. The equivalent resistance between A and B is (a)   (b)   (c)   (d)

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Answer Key : (c) -

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 An electric bulb rated for 500 W at 100 V is used in a circuit having a 200 V supply. The resistance 'R' that must kept in series with the bulb so that the bulb draws 500 W is (a) (b) (c) (d)

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