Q. (A) Choose the correct alternative and rewrite the following.
(1) The device used for producing current is called a _______.
(a) Voltmeter
(b) Ammeter
(c) Galvanometer
(d) Generator
(2) At the time of short circuit, the current in the circuit _______.
(a) increases
(b) decreases
(c) remains same
(d) increases in steps
(3) The direction of the magnetic field around a straight conductor carrying current is given by _______.
(a) Right hand rule
(b) Fleming’s left hand rule
(c) Fleming’s right hand rule
(d) none of these
(B) Say true or false. If false, write the correct sentence
(1) Magnetic poles exist in pairs.
(2) Magnetic field increases as we go away from a magnet.
(3) Magnetic lines of force always cross each other.
(4) Electric generator is used to generate current.
(C) Find the odd one out
(1) Loudspeaker, microphone, electric motor, bar magnet.
(2) Armature coil, brushes, commutator, direct current.
(3) Fuse, insulating material, rubber shoes, generator.
(4) Voltmeter, ammeter, galvanometer, thermometer.
