JAMB Physics · Electricity, magnetism and fields
Force on a current-carrying conductor in a magnetic field: JAMB Physics Past Questions and Answers
What the JAMB syllabus covers in Force on a current-carrying conductor in a magnetic field
Our summary: The force on wires and moving charges in a magnetic field, motors and meters.
- Quantitative treatment of force between two parallel current-carrying conductors
- Force on a charge moving in a magnetic field
- The d.c. motor
- Electromagnets
- Carbon microphone
- Moving coil and moving iron instruments
- Conversion of galvanometers to ammeters and voltmeters using shunts and multipliers
- Sensitivity of a galvanometer
Objectives
- determine the direction of force on a current carrying conductor using Fleming's left-hand rule;
- interpret the attractive and repulsive forces between two parallel current-carrying conductors using diagrams;
- determine the relationship between the force, magnetic field strength, velocity and the angle through which the charge enters the field;
- interpret the working of the d.c. motor;
- analyse the principle of electromagnets and give examples of its application;
- compare moving iron and moving coil instruments;
- convert a galvanometer into an ammeter or a voltmeter;
- identify the factors affecting the sensitivity of a galvanometer.
Syllabus content © The Joint Admissions and Matriculation Board (UTME).
JAMB Physics questions on Force on a current-carrying conductor in a magnetic field
- JAMB 2025A 5 positively charged particle is moving at 45º to the direction of magnetic field with 3 x 10 ^4 m/s speed. If it experiences a force of 6N, what is the value…
- JAMB 2025The device that operates using the magnetic effect of electric current is
- JAMB 2024Calculate the magnetic force on an electron in a magnetic field of flux density 10T, with a velocity of 3 x 10 ^7 m/s at 60º to the magnetic field (e = 1.6 x 10…
- JAMB 2024If a charge ion goes through a combined electric field E and magnetic field B, the resultant emergent velocity of the ion is
- JAMB 2022A magnet relay is a device used for?
- JAMB 2019A straight wire 15cm long, carrying a current of 6.0A is in a uniform field of 0.40T. What is the force on the wire when it is at right angle to the field
- JAMB 2016A charged particle is moving in a uniform magnetic field. if the direction of motion of the charged particle is parallel to the magnetic field, the path of the…
- JAMB 2016Which of the following instruments can be used to measure current in an a.c circuit?
- JAMB 2016Which of the following does Not use magnetic effect of current to function?
- JAMB 2015The device in which one circuit controls another, especially if the current in the second circuit is large or dangerous is known as
- JAMB 2015The strength of an electromagnet increases with
- JAMB 2013To convert a galvanometer to a voltmeter, a
- JAMB 2012A particle carrying a charge of 1. 0 x 10-8C enters a magnetic field at 3.0x 10-2 ms -1 at right angles to the field. If the force on this particle is 1.8 x…
- JAMB 2011In measuring high frequency a.c, the instrument used is the
- JAMB 2010A galvanometer with full-scale deflection of 10 mA is to be converted to a voltmeter with full-scale deflection of 5v. if a series resistance of 498Ω is used…
Years with Force on a current-carrying conductor in a magnetic field questions in DeeepSolve's question bank
From the past questions DeeepSolve holds, not a count of everything the exam body has set.
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