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Mar 21

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Questions Received from online chat session

Please find below questions received via chat session. Visitors can attempt to answer. Master will soon answer the question

  1. While doing experiment related to potentiometer a boy complaints that galvanometer in the circuit is not showing zero deflection even at maximum length. teacher checks the connection and find it correct.then what may be the reason?

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Comments

  1. SANDEEP says:

    DUE TO LOSE CONNECTION CONTACT RESISTANCE AT SEVERAL PLACES LIKE IN RESISTANCE BOX AND ON CONTACT OF WIRE AND METTALIC STRIP INCREASES THAT'S WHY IT DON DOT GIVES ZERO DEFLECTION.

  2. Vishnu says:

    replace the primary cell with one of higher voltage(higher than that of secondary) and try reducing the value of resistance in primary circuit.

  3. Vishnu says:

    replace the cell in primary circuit with one of higher voltage(higher than that of secondary circuit) and try reducing the value of resistance in primary circuit.

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