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Q:

Current in a conductor can be increased by

A) increasing the voltage across it. B) reducing its resistance.
C) both A and B D) none of the above
 
Answer & Explanation Answer: C) both A and B

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Q:

Even after sunset, the air near the Earth's surface continue to receive heat due to

A) Insolation B) Terrestrial Radiation
C) Conduction D) Convection
 
Answer & Explanation Answer: B) Terrestrial Radiation

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Q:

The slope of a Distance­Time graph shows ___________.

A) acceleration B) momentum
C) mass D) speed
 
Answer & Explanation Answer: D) speed

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Q:

An object, starting from rest, moves with constant acceleration of 4 m/s2. After 8 s, its speed is

A) 16 m/s B) 8 m/s
C) 32 m/s D) 4 m/s
 
Answer & Explanation Answer: C) 32 m/s

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Q:

What is the unit of the physical quantity, Momentum?

A) newton second B) joule second
C) erg second D) pascal second
 
Answer & Explanation Answer: A) newton second

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Q:

Which of the following is a device designed to protect electrical devices from voltage spikes?

A) Voltage unloader B) Surge protector
C) Heat protector D) Current unloader
 
Answer & Explanation Answer: B) Surge protector

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Q:

Rate of change of momentum is

A) Area B) Pressure
C) Force D) Velocity
 
Answer & Explanation Answer: C) Force

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Q:

_____ is same on every point on a rotating body.

A) Linear velocity B) Linear momentum
C) Angular torque D) Angular velocity
 
Answer & Explanation Answer: D) Angular velocity

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