Electricity & Magnetism MCQs with Answers

The easiest way to shift the load from one generator to another, when two shunt generators are running in parallel, is to _?

• A.Adjust their field rheostats
• B.Change their prime mover speeds
• C.Alter the armature resistance
• D.Switch the load terminals

Past Paper MCQ

Who discovered the law of attraction and repulsion in electric charges?

• A.Ampere
• B.Ohm
• C.Faraday
• D.Coulomb

The rate of flow of charge at a certain point is called ?

• A.Electric Potential
• B.Electric Current
• C.Electric Resistance
• D.Electric Power

How many terminals does a transistor typically have?

• A.Two
• B.Three
• C.Four
• D.Five

Which materials are used as the anode and cathode in a dry battery?

• A.Zinc anode and Copper cathode
• B.Carbon anode and Zinc cathode
• C.Copper anode and Zinc cathode
• D.Zinc anode and Carbon cathode

The north pole of a magnet is usually coated ?

• A.Yellow
• B.Blue
• C.Green
• D.Red

One volt can be defined as _?

• A.One ampere of current flowing through a resistance of one ohm
• B.One coulomb of charge flowing per second through a conductor
• C.One joule of energy dissipated per second in a circuit
• D.One joule of work done in moving a unit positive charge from one point to another

If in a parallel plate capacitor we insert a metal sheet of half the thickness as compared with spacing between the plates of the capacitor, the capacitance becomes?

• A.C/2
• B.4C
• C.2C
• D.C

A quantity known as the indicates the total resistance of the circuit.

• A.Net impedance
• B.Effective capacitance
• C.Total inductance
• D.Equivalent resistance

The electrode that undergoes oxidation in an electrochemical cell is _?

• A.Anode
• B.Cathode
• C.Electrolyte
• D.Salt bridge