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WBJEE 2018 Physics Solved Paper

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Question : 38

Total: 39

A non–zero current passes through the galvanometer G shown in the circuit when the key "K" is closed and its value does not change when the key is opened. Then which of the following statement(s) is/are true ?

The galvanometer resistance is infinite.
The current through the galvanometer is 40 mA.
After the key is closed, the current through the 200Ω resistor is same as the current through the300Ω resistor.
The galvanometer resistance is 150Ω.

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