Identification of Diode, LED, Resistor, A Capacitor from a Mixed Collection of such items NEET Questions

Physics - Experimental Skills

Identification of Diode, LED, Resistor, A Capacitor from a Mixed Collection of such items MCQ Questions


1.
A resistor is an electronic component that:
A.
Stores energy in electric field
B.
Generates voltage
C.
Emits light
D.
Opposes the flow of electric current and obeys Ohm's law (V = IR)
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ANSWER :
D. Opposes the flow of electric current and obeys Ohm's law (V = IR)
2.
A capacitor is an electronic component that:
A.
Generates voltage
B.
Generates light
C.
Stores electrical energy in an electric field between two conductors separated by a dielectric
D.
Opposes current always
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ANSWER :
C. Stores electrical energy in an electric field between two conductors separated by a dielectric
3.
A diode is an electronic component that:
A.
Conducts equally in both directions
B.
Always blocks current
C.
Stores energy
D.
Allows current flow primarily in one direction (forward bias) and blocks reverse current
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ANSWER :
D. Allows current flow primarily in one direction (forward bias) and blocks reverse current
4.
An LED (Light Emitting Diode) is a special diode that:
A.
Generates electricity from light
B.
Stores energy
C.
Emits light when forward biased (electrons recombine with holes, releasing photons)
D.
Conducts in reverse only
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ANSWER :
C. Emits light when forward biased (electrons recombine with holes, releasing photons)
5.
Which of the following is the FUNDAMENTAL difference between a resistor and a diode?
A.
Resistor is more expensive
B.
Diode is bigger
C.
Just by name
D.
Resistor is bidirectional (V = IR for both polarities); diode is unidirectional (conducts only in forward bias)
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ANSWER :
D. Resistor is bidirectional (V = IR for both polarities); diode is unidirectional (conducts only in forward bias)
6.
Which of the following is the FUNDAMENTAL difference between a capacitor and a resistor?
A.
Capacitor is cheaper
B.
No difference
C.
Just by name
D.
Capacitor stores energy and blocks DC; resistor dissipates energy and allows DC
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ANSWER :
D. Capacitor stores energy and blocks DC; resistor dissipates energy and allows DC