Current Electricity Test

Result

Current Electricity Test - 135

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

In each of the follwing questions, match column I and column II and select the correct match out of the four given choices.

A
a – p, b – q, c – r, d – s

B
a – q, b – p, c – r, d – s

C
a – q, b – p, c – s, d – r

D
a – p, b – q, c – s, d – r
Question 2
4 / -1

In each of the follwing questions, match column I and column II and select the correct match out of the four given choices

A
a – p, b – q, c – r, d – s

B
a – s, b – r, c – q, d – p

C
a – r, b – q, c – p, d – s

D
a – q, b – r, c – s, d – p
Question 3
4 / -1

Match the following two columns.

A
a – q, b – s, c – r, d – p

B
a – q, b – r, c – s, d – s

C
a – p, b – q, c – s, d – r

D
a – p, b – r, c – q, d – s
Question 4
4 / -1

Match the physical quantities given in column I with their dimensional formulae given in column II –I stands for the dimesion of current.

A
a – s, b – p, c – q, d – r

B
a – p, b – s, c – r, d – q

C
a – p, b – s, c – r, d – q

D
a – r, b – p, c – q, d – s
Question 5
4 / -1

The length of a potentiometer wire is 600cm and it carries a current of 40m A for cell of emf 2V and internal resistance 10Ω, the null point is found to be at 500cm on connecting a voltmeter across the cell, the balancing length is decreased by 10 cm
The voltmeter reading will be.

A
1.96 V

B
1.8 V

C
1.64 V

D
0.96 V
Question 6
4 / -1

The length of a potentiometer wire is 600cm and it carries a current of 40m A for cell of emf 2V and internal resistance 10Ω, the null point is found to be at 500cm on connecting a voltmeter across the cell, the balancing length is decreased by 10 cm
The resistance of the voltmeter is

A
500 Ω

B
290 Ω

C
490 Ω

D
20 Ω
Question 7
4 / -1

Assertion: There is no current in the metals in the absence of electric field.
Reason: Motion of free electrons is random.

A
Both assertion and reason are true and the reason is correct ercplanation of the assertion

B
Both assertion and reason are true, but reason is not correct explanation of the assertion

C
Assertion is true, but the reason is false

D
Both, assertion and reason are false
Question 8
4 / -1

Assertion: the drift velocity of electrons in a metallic wire will decrease, if the tempreature of the wire is increased
Reason: On increasing temperature, conductivity of metallic wire decreases

A
Both assertion and reason are true and the reason is correct explanation of the assertion

B
Both assertion and reason are true, but reason is not correct explanation of the assertion

C
Assertion is true, but the reason is false

D
Both, assertion and reason are false
Question 9
4 / -1

Assertion: A potentiometer of longer length is used for acaurate measurement.
Reason: The potential gradient for a potentiometer of longer length with a given source of e.m.f become small.

A
Both assertion and reason are true and the reason is correct explanation of the assertion

B
Both assertion and reason are true, but reason is not correct explanation of the assertion

C
Assertion is true, but the reason is false

D
Both, assertion and reason are false
Question 10
4 / -1

Assertion: The 200w bulbs glow with more brightness than 100w bulbs.
Reason: A 100w bulb has more resistance than a 200w bulb.

A
Both assertion and reason are true and the reason is correct explanation of the assertion

B
Both assertion and reason are true, but reason is not correct explanation of the assertion

C
Assertion is true, but the reason is false

D
Both, assertion and reason are false