Question 331: Current Electricity

Question

A galvanometer having a coil resistance of $$100\,\Omega $$ gives a full scale deflection, when a currect of $$1$$ $$mA$$ is passed through it. The value of the resistance, which can convert this galvanometer into ammeter giving a full scale deflection for a current of $$10$$ $$A,$$ is :

Accepted Answer

$${m I}gG = \left( {{m I} - {m I}g} ight)s$$
$$	herefore$$ $${10^{ - 3}} 	imes 100 = \left( {10 - {{10}^{ - 3}}} ight) 	imes S$$
$$	herefore$$ $$S \approx 0.01\,\,\Omega $$

Answer

$$0.1\,\Omega $$

Answer

$$3\,\Omega $$

Answer

$$0.01\,\Omega $$

Answer

$$2\,\Omega $$

Current Electricity

A galvanometer having a coil resistance of $100\,\Omega gives a full scale deflection, when a currect of 1 mA is passed through it. The value of the resistance, which can convert this galvanometer into ammeter giving a full scale deflection for a current of 10 A,$ is :

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