MCQ - TNPSC JTO
JTO - 540 - Trade - Workshop Calculation Science
540 UNIT 5 Basic Electricity
33)
What is the resistance of a wire if V = 10V and I = 2A?
A.
B.
C.
D.
34)
In an open circuit, current is...
A.
B.
C.
D.
35)
Which among the following is used as heating element?
A.
B.
C.
D.
36)
Unit of electric potential is...?
A.
B.
C.
D.
37)
Which device is used to break the circuit?
A.
B.
C.
D.
38)
Magnetic effect of electric current was discovered by...?
A.
B.
C.
D.
39)
The speed of current in a conductor is...
A.
B.
C.
D.
40)
Which type of current is supplied to homes?
A.
B.
C.
D.
41)
What type of connection is used in home wiring for lights and fans?
A.
B.
C.
D.
42)
Who discovered electromagnetic induction?
A.
B.
C.
D.
43)
What is the SI unit of energy?
A.
B.
C.
D.
44)
Electric motor works based on...?
A.
B.
C.
D.
45)
When a switch is off, the circuit is...
A.
B.
C.
D.
46)
A good insulator has...
A.
B.
C.
D.
47)
What happens when current flows through a wire?
A.
B.
C.
D.
48)
Which among the following uses the principle of mutual induction?
A.
B.
C.
D.