Electric lamps — task. Physics CBSE Live product, Class 7 (2026-27).

Choose the best answer for the following.

1. Why is the filament of an incandescent lamp made thin?

To save electricity
To reduce the cost of metal
To reduce brightness
To allow it to heat quickly and glow

2. In an LED, the longer wire represents

switch terminal
positive terminal
neutral terminal
negative terminal

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