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Q:

Find the resistance (in mega Ω) of a wire of length 10 m, cross sectional area 1 cm2 and made of a material of resistivity 100 Ωm.

 

A) 1000   B) 20  
C)  500   D) 10
 
Answer & Explanation Answer: D) 10

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Filed Under: Physics
Exam Prep: Bank Exams

Q:

Assuming that the charge of an electron is 1.6 x 10-19 C, the number of electrons passing through a section of wire per second when the wire carries a current of 1 A is

 

 

 

A) 6.25 x 1018 C B) 1.6 x 10-19 C
C) 1.6 x 1019 C D) 0.625 x 1017 C
 
Answer & Explanation Answer: A) 6.25 x 1018 C

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Filed Under: Physics
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Q:

An assertion (A) and a reason (R) are given below.

 

Assertion (A) : Electric wires are generally made of copper.

 

Reason (R) : Copper is a good conductor.

 

Choose the correct option.

 

A) Both A and R are true and R is the correct explanation of A B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false D) A is false, but R is true
 
Answer & Explanation Answer: A) Both A and R are true and R is the correct explanation of A

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Filed Under: Statement and Conclusions
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Q:

If I is the current through a wire and e is the charge of an electron, then the number of electrons crossing in t seconds will be given by

A) e/It B) It/e
C) Ie/t D) Ite
 
Answer & Explanation Answer: B) It/e

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Q:

What will be the resistance of a wire across which, when 2V potential difference is applied, 1A current flows through the wire?

A) 2 ohms B) 0.02 ohms
C) 0.5 ohms D) 20 ohms
 
Answer & Explanation Answer: A) 2 ohms

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Q:

The copper wire when bent in the form of a square encloses an area of 121 cub.cm. If the same wire is bent into the form of a circle, find the area of the circle.

A) 154 sq.cm B) 153 sq.cm
C) 155 sq.cm D) 150 sq.cm
 
Answer & Explanation Answer: A) 154 sq.cm

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

Q:

Rearrange the parts of the sentence in correct order.

 

Disadvantage of wired telephone

 

P : due to the line breakage

Q : connection is the loss

R : of connectivity during disasters

 

A) QRP B) QPR
C) RQP D) PQR
 
Answer & Explanation Answer: A) QRP

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Filed Under: English
Exam Prep: Bank Exams , GRE , TOEFL

Q:

Rearrange the parts of the sentence in correct order.

The more technologically

P-­advanced and wired a
Q­-vulnerable it is to a cyber attack
R­-nation is, the more

 

A) RPQ B) QRP
C) PRQ D) QPR
 
Answer & Explanation Answer: C) PRQ

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Filed Under: English
Exam Prep: Bank Exams