An ammeter reads up to 1 ampere. Its internal resistance is 0.81 ohm. To increase the range to 10 A the value of the required shunt is (1) $0.03\,\Omega$ (2) $0.3\,\Omega$ (3) $0.9\,\Omega$ (4) $0.09\,\Omega$
An ammeter reads up to 1 ampere. Its internal resistance is 0.81 ohm. To increase the range to 10 A the value of the required shunt is\\
(1) $0.03\,\Omega$\\
(2) $0.3\,\Omega$\\
(3) $0.9\,\Omega$\\
(4) $0.09\,\Omega$