Electricity & Magnetism MCQs with Answers

Past Paper MCQ

What is the primary function of the reaction between sulphuric acid and lead plates in car batteries?

• A.To produce electricity
• B.To generate heat
• C.To neutralize the acid
• D.To create a magnetic field

If two straight long conductors carry current in the same direction, the magnetic force on each other will be _?

• A.Attractive
• B.Repulsive
• C.Zero
• D.None of these

The maximum power transfer theorem states that maximum power is delivered to the load when

• A.The load resistance is zero
• B.The load resistance is greater than the source resistance
• C.The load resistance is less than the source resistance
• D.The load resistance is equal to the source resistance

Solar panels contain Solar Cells which are also called ?

• A.Photo-voltaic cells
• B.Thermoelectric cells
• C.Electrochemical cells
• D.Photoelectric tubes

In an electric circuit, when electrons move from low to high potential they will _?

• A.Gain energy
• B.Lose energy
• C.Remain at same energy level
• D.First gain then lose energy

Battery of a vehicle is charged due to a ?

• A.Heating effect
• B.Chemical effect
• C.Magnetic effect
• D.Mechanical effect

Which of the following is not a type of capacitor?

• A.Electrolytic Capacitor
• B.Ceramic Capacitor
• C.Polar Capacitor
• D.Variable Capacitor

The earth behaves like a huge _?

• A.Bar magnet
• B.Electromagnet
• C.Horseshoe magnet
• D.Permanent magnet

A piece of thin wire that is used in an electric circuit to protect electrical appliances is called _?

• A.Resistor
• B.Fuse
• C.Capacitor
• D.Inductor

Two opposite point charges of same magnitude separated by distance 2d, electric potential midway between them is?

• A.Depends on the magnitude of charges
• B.Maximum
• C.Twice the potential due to one charge
• D.Zero