Question

A cyclist riding a bicycle fitted with dynamo to a tyre gets bright light from the bulb connected when he s fast. this is because

• A. magnet becomes powerful, when wheel rotates faster and current flows fast.
• B. current flows easly when cycle goes down
• C. more magnetic lines of force change with respect to the coil and leading more current
• D. coil become hot due to friction and produces more current

Answer 1

The correct option is A magnet becomes powerful, when wheel rotates faster and current flows fast.

A cyclist riding a bicycle fitted with dynamo to a Tyre gets bright light from the bulb connected when he is fast. by this magnet becomes powerful,when wheel rotates faster and current flows fast.

so that the correct option is A.