Electric Charge and Resistance Units in Physics

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Which of the following is the SI unit of the universal constant of gravitation?

Nm/kg^2

N/m^2kg^-2 (correct)

N/m

kg/ms

What is the SI unit of weight, which represents the force on an object due to gravity?

Force (correct)

Impulse

Mass

Acceleration

Which two physical quantities share the same unit of measurement?

Force and Dyne

Pressure and Force

Force and Weight (correct)

Force and Speed

What is the SI unit of Newton, in relation to physical quantities?

Weight and Force Signup and view all the answers

Which pair of physical quantities do NOT have the same SI units?

Momentum and Universal constant of gravitation Signup and view all the answers

What is the dimensional formula for weight or force?

[MLT^-2] Signup and view all the answers

What is the SI unit of resistance?

Ohm Signup and view all the answers

Which physical quantity is measured in ohms?

Resistance Signup and view all the answers

What is the SI unit of stress?

N/m2 Signup and view all the answers

Which unit represents the flow of electric charge per second across a wire?

Ampere Signup and view all the answers

What does the SI unit Coulomb represent?

Charge Signup and view all the answers

Which physical quantity does the unit Ohm relate to?

Resistance Signup and view all the answers

What is the gravitational potential energy of an object at a point above the ground defined as?

The work done to lift it from the ground to the point opposite to gravity Signup and view all the answers

A bullet fired from a gun has the maximum what?

Kinetic energy Signup and view all the answers

If a force of 20 N displaces an object through 2 m and does a work of 20 J, what is the angle between the force and displacement?

60° Signup and view all the answers

If a car of 800 kg increases its speed from 5 m/s to 10 m/s, what is the work done?

30 kJ Signup and view all the answers

If an object of 1 kg is dropped from a height of 30 m, what is the work done by the force of gravity?

300 J Signup and view all the answers

If a porter raises a 12 kg object from the surface of the Earth and puts it 1.5 meters above the surface on his head, what is the work done by the porter?

216 J Signup and view all the answers

What is the primary function of a voltmeter?

To measure the potential difference between two points in a circuit Signup and view all the answers

Which type of voltmeter displays the measured voltage as a numerical value?

Digital voltmeter Signup and view all the answers

What is the primary function of a galvanometer?

To detect and indicate the presence of an electric current Signup and view all the answers

Which instrument would be most appropriate for measuring the voltage across a battery?

Voltmeter Signup and view all the answers

If a galvanometer is used to detect the presence of an electric current, what would indicate the direction of the current?

The rotary deflection of the needle Signup and view all the answers

Which instrument would be least suitable for measuring voltage in a circuit?

Barometer Signup and view all the answers

Which of the following is used to measure the strength of winds?

Beaufort scale Signup and view all the answers

What are Korotkoff sounds associated with?

Measuring blood pressure Signup and view all the answers

If a household consumes 100 units of energy in 5 days, how much energy is this in Joules?

$3.6 \times 10^8$ J Signup and view all the answers

Which of the following instruments does NOT measure the same quantity as the others?

Tintometer Signup and view all the answers

What is the primary purpose of the Beaufort scale?

To measure the strength of winds Signup and view all the answers

Which of the following units is used to measure energy consumption in households?

Units Signup and view all the answers