MCQ of electrical and physics/ studybuddy

Electrical engineering and simple physics MCQ with answers.

1.What is Ohm's Law used to calculate?

a) Voltage

b) Current

c) Resistance

d) Power

2.What is the unit of electrical resistance?

a) Coulomb

b) Volt

c) Ohm

d) Watt

3.How is alternating current (AC) different from direct current (DC)?

a) AC has a higher voltage than DC

b) AC changes direction, while DC does not

c) AC is more efficient than DC

d) AC is less expensive than DC

4.What is a transformer used for in an electric circuit?

a) To increase the voltage

b) To decrease the voltage

c) To increase the current

d) To decrease the resistance

5.What is a diode used for in an electric circuit?

a) To rectify AC to DC

b) To amplify a signal

c) To store electrical energy

d) To switch the circuit on and off

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