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A galvanometer used to locate the null point in circuit experiments shows a deflection of 2 divisions when a current of 6 mA passes through it. Its figure of merit is approximately:

3 * 10⁻³ A/div.
333 A/div.
6 * 10⁻³ A/div.
666 A/div.

Correct answer: 3 * 10⁻³ A/div.

Solution

Figure of merit k = I/theta = 6 mA / 2 div = 3 * 10⁻³ A/div.

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