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Physics

Physics
Tesla is a unit of magnetic :

Induction
Field
Flux
Moment

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Physics
When the barometer reading dips suddenly, it is an indication of

Storm
Hot weather
Dry weather
Calm weather

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Physics
Conversion of heat into electrical energy is achieved by using :

Thermocouple
Ammeter
Voltmeter
Hydrometer

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Physics
When a bar magnet is cut into two equal halves, the pole strength of each piece –

Becomes half
Becomes zero
Remains the same
Becomes double

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Physics
Wollen clothes keep the body warm because

Wool rejects heat from the outer objects
Wool increases the temperature of the body
Wool absorbs radiant heat from outer objects
Wool is a bad conductor

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Physics
The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 127.5 V ?

8.5 A
24 A
0.41666666666667

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