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Q:

Sensitivity of potentiometer can be increased by

A) increasing the length of the potentiometer wire B) increasing the e.m.f of the cell
C) decreasing the length of the potentiometer wire D) none of these
 
Answer & Explanation Answer: A) increasing the length of the potentiometer wire

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Q:

Sensitivity of potentiometer can be increased by

A) increasing the e.m.f. of the cell B) increasing the length of the potentiometer
C) decreasing the length of the potentiometer wire D) none of these
 
Answer & Explanation Answer: B) increasing the length of the potentiometer

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Q:

If two coulomb of charge flows through any cross-section of a conductor in one second, what will be the current flowing through it?

A) 1 Ampere B) 1/2 Ampere
C) 1/4 Ampere D) 2 Amperes
 
Answer & Explanation Answer: D) 2 Amperes

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Q:

If a current of 1.5 A is maintained in a resistor of 10 ohm, then the energy dissipated in the resistor in 1 minute will be 

 

 

A) 15 W  B) 22.5 W 
C) 135 W  D) 1350 W
 
Answer & Explanation Answer: D) 1350 W

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Q:

The SI unit of momentum is _____________.

A) kilogram-metre per second B) kilogram-metre per second
C) kilogram-metre-second D) kilogram-metre-second squared
 
Answer & Explanation Answer: A) kilogram-metre per second

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Q:

The speed of the light is maximum in

A) Air B) Vacuum
C) Water D) Glass
 
Answer & Explanation Answer: B) Vacuum

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Q:

Which of the following can do more work?

A) A rotating wheel B) A moving bullet
C) A speeding stone D) A raised hammer
 
Answer & Explanation Answer: B) A moving bullet

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Q:

Who does not the kinetic energy of an object increase with?

A) Friction B) Time
C) Mass D) Speed
 
Answer & Explanation Answer: D) Speed

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