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পদার্থবিজ্ঞান দ্বিতীয় পত্র - তড়িৎ প্রবাহের চৌম্বক ক্রিয়া ও চুম্বকত্ব - IUT - 12 Min - 2026-02-21 02:09:32

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র‍্যাংকিং দেখুন সেন্ট্রাল রেংকিং
পরীক্ষার সময়
শুরু
21 Feb 02:10 AM
শেষ
21 Feb 02:15 AM
AN
6.3%
1
সঠিক
0
ভুল
15
স্কিপ
1
মোট মার্কস
1
Three particles are placed in a line. The left has a charge of -67μC, the middle +45μC and the right -83µC. The middle is 72cm from each of the others. What is force on the middle particle?
skipped
2
Which of the followings is true of the magnetic field produced by a current in a long-straight wire?
correct
3
A proton enters in a magnetic field of  6.0 muT with a velocity of  6.0×10^7 ms^-1 . What is the magnetic force on the proton? 
skipped
4
A Proton of 8 MeV energy is applied perpendicularly in uniform magnetic field of 5.0 T. Calculate the effective force on the proton. 
skipped
5
A 125m long power line is horizontal and carries a current if 2500 A.The earth's magnetic field at the location is 0.52 mT directed downward. What is magnetic force on the line?
skipped
6
A wire 75cm long carrying a current of 6.0A is at right angles to a uniform magnetic field. The magnitude of the force action on the wire is 0.60N. What is the strength of the magnetic field?
skipped
7
Magnetic flux in a coil is changing according to the following equation: φ=(4t^2+2t-10) Wb, where t is measured in s. If the resistance of the coil is 5 ohm then at t=2s calculate the induced current in the coil. 
skipped
8
An electron with velocity 4.8*107 m/s enters in a magnetic field with flux density of 0.32 T.What is the radius of the path of the electron?
skipped
9
An overhead electrical conductor is carrying a current of 500 A. What is the magnitude of the magnetic field 1.5 m below the conductor?
skipped
10
The flux linked with a coil at any instant 't' is given by  phi =10t2-50t+250.The induced emf at t=3s is-
skipped
11
What is the size of the current in a 35cm long wire that is perpendicular to a magnetic field of 0.085 T.If the force on the wire is 125 mN?
skipped
12
A coil of 300 turns has self-inductance of 10 mH. If the current flow in the coil is 3 amperes , what will be the magnetic flux?  
skipped
13
A wire 75 cm long carrying a DC current of 6A is at right angle to uniform magnetic field.The magnitude of the force acting on the wire is 0.6N.What is the strength of the magnetic field?
skipped
14
The velocity of a particle of charge +4.0 x 10-9 C and mass 2 x 10-4 kg is perpendicular to a 0.1-teala magnetic field. If the particle's speed is 3x104m/s, what is the acceleration of this particle due to the magnetic force?
skipped
15
An electron in the beam of a TV picture tube is accelerated through a potential difference of 2.00kV. It then passes into a magnetic field prependicular to its path,where it moves in a circular arc of diameter 0.36m.What is the magnitude of this magnetic field?
skipped
16
A particle with a charge of -1.24×108 C is moving with instantaneous velocity  vec v=(4.19×10^4)hati+(-3.85×10^4)hatj m/s  what is the force exerted on this particle by a magnetic field  vecB=(1.40)hati T 
skipped
2
Which of the followings is true of the magnetic field produced by a current in a long-straight wire?
correct

এই বিভাগে কোনো প্রশ্ন নেই।

1
Three particles are placed in a line. The left has a charge of -67μC, the middle +45μC and the right -83µC. The middle is 72cm from each of the others. What is force on the middle particle?
skipped
3
A proton enters in a magnetic field of  6.0 muT with a velocity of  6.0×10^7 ms^-1 . What is the magnetic force on the proton? 
skipped
4
A Proton of 8 MeV energy is applied perpendicularly in uniform magnetic field of 5.0 T. Calculate the effective force on the proton. 
skipped
5
A 125m long power line is horizontal and carries a current if 2500 A.The earth's magnetic field at the location is 0.52 mT directed downward. What is magnetic force on the line?
skipped
6
A wire 75cm long carrying a current of 6.0A is at right angles to a uniform magnetic field. The magnitude of the force action on the wire is 0.60N. What is the strength of the magnetic field?
skipped
7
Magnetic flux in a coil is changing according to the following equation: φ=(4t^2+2t-10) Wb, where t is measured in s. If the resistance of the coil is 5 ohm then at t=2s calculate the induced current in the coil. 
skipped
8
An electron with velocity 4.8*107 m/s enters in a magnetic field with flux density of 0.32 T.What is the radius of the path of the electron?
skipped
9
An overhead electrical conductor is carrying a current of 500 A. What is the magnitude of the magnetic field 1.5 m below the conductor?
skipped
10
The flux linked with a coil at any instant 't' is given by  phi =10t2-50t+250.The induced emf at t=3s is-
skipped
11
What is the size of the current in a 35cm long wire that is perpendicular to a magnetic field of 0.085 T.If the force on the wire is 125 mN?
skipped
12
A coil of 300 turns has self-inductance of 10 mH. If the current flow in the coil is 3 amperes , what will be the magnetic flux?  
skipped
13
A wire 75 cm long carrying a DC current of 6A is at right angle to uniform magnetic field.The magnitude of the force acting on the wire is 0.6N.What is the strength of the magnetic field?
skipped
14
The velocity of a particle of charge +4.0 x 10-9 C and mass 2 x 10-4 kg is perpendicular to a 0.1-teala magnetic field. If the particle's speed is 3x104m/s, what is the acceleration of this particle due to the magnetic force?
skipped
15
An electron in the beam of a TV picture tube is accelerated through a potential difference of 2.00kV. It then passes into a magnetic field prependicular to its path,where it moves in a circular arc of diameter 0.36m.What is the magnitude of this magnetic field?
skipped
16
A particle with a charge of -1.24×108 C is moving with instantaneous velocity  vec v=(4.19×10^4)hati+(-3.85×10^4)hatj m/s  what is the force exerted on this particle by a magnetic field  vecB=(1.40)hati T 
skipped
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