Current Electricity Test

Result

Current Electricity Test - 3

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

Match the Column I with Column II.

A
A−r, B−q, C−p

B
A−p, B−r, C−q

C
A−r, B−p, C−q

D
A−q , B−r, C−p

Solution

(A) → (p) if the temperature is not very high.
(B) → (r)
(C) → (q)
Question 2
4 / -1

Which of the following I - V graph represents ohmic conductors?

A

B

C

D

Solution

Ohm’s law V = IR is an equation of straight line. Hence I - V characteristics for ohmic conductors is also a straight line and its slope gives resistance of the conductor.
Question 3
4 / -1

The I - V characteristics shown in figure represents

A
ohmic conductors

B
non-ohmic conductors

C
insulators

D
superconductors

Solution

The figure is showing I-V characteristics of non-ohmic or non-linear conductors.
Question 4
4 / -1

Which of the following is correct for V-I graph of a good conductor?

A

B

C

D

Solution

For a good conductor, the graph between voltage and current does not obey exactly ohms law, it shows some deviation from straight line.
Question 5
4 / -1

A charged particle having drift velocity of 7.5 × 10⁻⁴ m s⁻¹ in electric field of 3×10⁻¹⁰ V m⁻¹, mobility is?

A
6.5 × 10⁶m²V⁻¹s⁻¹

B
2.5 × 10⁶m²V⁻¹s⁻¹

C
2.5 × 10⁴m²V⁻¹s⁻¹

D
6.5 × 10⁴m²V⁻¹s⁻¹

Solution

Mobility of charged particle

= 2.5 × 10⁶m²V⁻¹s⁻¹