Magnetic force between two wires is proportional to _.
Correct answer: B. Current on them
- A. Distance
- B. Current on them
- C. Charge on them
- D. None of these
Explanation
According to Ampere's law, the magnetic force between two parallel current-carrying wires is directly proportional to the current flowing through the wires. The magnetic field generated by a current-carrying wire interacts with the magnetic field of the other wire, resulting in a force between them. The greater the current flowing through the wires, the stronger the magnetic force between them.The other options, distance (A) and charge (C), are not directly related to the magnetic force between two wires. Distance affects the strength of the magnetic field but does not determine the force between the wires. Charge is not relevant in this context, as the force between wires is primarily influenced by the current they carry.Therefore, the magnetic force between two wires is proportional to the current flowing through them.
Last updated
About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
Practise Electromagnetism
1,176 free Electromagnetism MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1 Tesla is equal to:
1 tesla is equal to:
2.5π µF capacitor and 3000-ohm resistance are joined in series to an AC source of 200 volts and frequency. The power factor of the circuit and the power dissipated in it will respectively be:
A 10 cm long solenoid has 100 turns. What will be the magnetic field inside it along its axis if one-microampere current is passed through it?
A 100-turn coil of area 0.1 m2 rotates at half a revolution per second. It is placed in a uniform magnetic field of 0.01 T perpendicular to the axis of rotation of the coil. Calculate the maximum voltage generated in the coil?