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(i) List any two features of the electric current used in the houses of India.
(ii) Write any two differences between direct current and an alternating current.
(iii) How will you identify live wire and neutral wire in a domestic electric circuit ?
(ii) Write any two differences between direct current and an alternating current.
(iii) How will you identify live wire and neutral wire in a domestic electric circuit ?
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(i) Features:
• Direction of current changes periodically/ alternating current. (1 Mark)
• Frequency of current supplied in our houses is 50 Hz. (1 Mark)
(ii)
Direct current: (I) Flows in one direction, (II) Sources: Cell / battery
Alternating current: (I) Reverses its direction periodically, (II) Source: Power plant (any other suitable difference) (1 + 1 Marks)
(iii) Live wire has red insulation cover and neutral wire has black insulation cover. (1 Mark)
• Direction of current changes periodically/ alternating current. (1 Mark)
• Frequency of current supplied in our houses is 50 Hz. (1 Mark)
(ii)
Direct current: (I) Flows in one direction, (II) Sources: Cell / battery
Alternating current: (I) Reverses its direction periodically, (II) Source: Power plant (any other suitable difference) (1 + 1 Marks)
(iii) Live wire has red insulation cover and neutral wire has black insulation cover. (1 Mark)