I IMech 2025 Quiz-1

What is the SI unit of electric charge?

• Coulomb

• Joule

• Ohm

• Volt

Which subatomic particle is responsible for electric current in a conductor?

• Electron

• Proton

• Neutron

• Photon

What is the flow of electric charge called?

• Electric Current

• Voltage

• Capacitance

• Resistance

In a conductor, electric current is caused by the movement of:

• Free electrons

• Neutrons

• Holes

• Protons

Which of the following materials is a good conductor of electricity?

• Copper

• Rubber

• Wood

• Glass

What is the property of a resistor?

• Opposes the flow of current

• Stores energy in an electric field

• Generates magnetic fields

• Amplifies voltage

What is the SI unit of inductance?

• Henry

• Farad

• Coulomb

• Tesla

A capacitor stores energy in:

• An electric field

• A magnetic field

• The form of heat

• The form of mechanical energy

Ohm's law states that:

• V = IR

• V = I/R

• I = V^2/R

• R = V + I

Kirchhoff’s Voltage Law (KVL) states that the sum of voltages in a closed loop is:

• Zero

• Equal to resistance

• Infinite

• Equal to the source voltage