Question 367: Current Electricity

Question

An ammeter reads upto $$1$$ ampere. Its internal resistance is $$0.81$$ $$ohm$$. To increase the range to $$10$$ $$A$$ the value of the required shunt is

Accepted Answer

$${i_g} 	imes G = \left( {i - {i_g}} ight)S$$
$$	herefore$$ $$S = {{{i_g} 	imes G} \over {i - {i_g}}} = {{1 	imes 0.81} \over {10 - 1}} = 0.09\Omega $$

Answer

$$0.03\,\Omega $$

Answer

$$0.3\,\Omega $$

Answer

$$0.9\,\Omega $$

Answer

$$0.09\,\Omega $$

Current Electricity

An ammeter reads upto $1 ampere. Its internal resistance is 0.81 ohm. To increase the range to 10 A$ the value of the required shunt is

Choose the correct answer: