Electricity & Magnetism MCQs with Answers

Which type of battery is commonly used in automobiles?

• A.Nickel-cadmium battery
• B.Lithium-ion battery
• C.Lead storage battery
• D.Dry cell battery

A magnetic field exerts a force on a charged particle ?

• A.If the particle is at rest
• B.In all cases regardless of motion
• C.If the particle is moving along the field lines
• D.If the particle is moving across the field lines

The human body is classified as which of the following in terms of electrical conductivity?

• A.Conductor
• B.Insulator
• C.Semiconductor
• D.Superconductor

If the RC value (Resistance × Capacitance) is small in a circuit, what happens to the charging of a capacitor?

• A.It charges faster
• B.It charges slower
• C.It does not charge at all
• D.Charging remains unaffected

SCR is a device.

• A.Bidirectional
• B.Unidirectional
• C.Oscillating
• D.Amplifying

An ampere-hour (Ah) is a unit of _?

• A.Potential difference
• B.Electric current
• C.Electric power
• D.Quantity of charge

Electric intensity between two oppositely charged plates in the middle region is _?

• A.Zero
• B.Uniform
• C.Variable
• D.Maximum at the edges

Some materials hold their electrons very tightly. Electrons do not move through them very well. These things are called?

• A.Conductors
• B.Insulators
• C.Semiconductors
• D.Superconductors

What is the property of the wire used for fuse making?

• A.High resistivity and high melting temperature
• B.Low resistivity and high melting temperature
• C.High resistivity and low melting temperature
• D.Low resistivity and low melting temperature

Which catalyst is used for separation of Oxygen and Hydrogen in water (H2O)?

• A.Platinum
• B.Nickel
• C.Electricity
• D.Iron