# 10th Class Physics MCQS Chapter 9

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When 1 tonne of coal is burnt then amount of energy is released .
36 J
36 x 109J
36 x 108 J
36 x 1010J

One of the isotopes of uranium is 238U92the number of neutrons in the isotopes is.
330
238
92
146

Watt is equal to:
Newton per second
Coulomb per second
Volt per second
Joule per second

the resistance of an ammeter should be:
low
very high
constant
high

If we double both the current and the voltage in a circuit while keeping its resistance constant, the power:
Halves
Four time
Remains unchanged
Doubles

A thermistor is a dependent resistors:
mass
temperature
energy
Heat

an additional wire used along with live and neutral wire is:
cable wire
grip wire
hot wire
earth wire

Release of the energy by the sun is due to:
Chemical reaction
Burning of gases
Nuclear Fission
Nuclear Fussion

The commercial unit of electrical energy is:
Kilowatt hour
Joule
Watt
Electron volt

Which instrument is used to detect current:
Voltmeter
Electroscope
Galvanometer
Ammeter

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