Magnetic effect of current was discovered by? Mark as favorite Copy Link Ampere Oersted Bohr Faraday Check Answer
Commercial electric motors do not use? Mark as favorite Copy Link a soft iron core on which the coil is wound a permanent magnet to rotate the armature effectively large number of turns of conducting wire in the current carrying coil an electromagnet to rotate the armature Check Answer
The instrument that use to defect electric current in the circuit is known as? Mark as favorite Copy Link A.C generator galvanometer electric motor none of the above Check Answer
The pattern of the magnetic field produced by the straight current carrying conducting wire is? Mark as favorite Copy Link in the same direction of current circular around the wire in the direction opposite to the current in the direction parallel to the wire Check Answer
Direction of rotation of a coil in electric motor is determined by? Mark as favorite Copy Link faraday law of electromagnetic inductors fleming’s right hand rule fleming’s left hand rule None of above Check Answer
Magnetic effect of current was discovered by? Mark as favorite Copy Link Bohr Oersted Ampere Faraday Check Answer
Which device produces the electric current? Mark as favorite Copy Link motor generator ammeter galvanometer Check Answer
An electric generator actually acts as? Mark as favorite Copy Link a converter of energy. an electromagnet. a source of neat energy. a source of electric charge. Check Answer
To convert an ac generator into dc generator? Mark as favorite Copy Link A rectangular wire loop has to be used Split-ring type commutator must be used A stronger magnetic field has to be used Slip rings and brushes must be used Check Answer
In Fleming’s right hand rule direction in induced current is given by? Mark as favorite Copy Link first finger thumb middle finger none of these Check Answer