Question
Download Solution PDFThe total force on a charge 'q' moving with velocity 'v' in the presence of magnetic and electric fields 'B' and 'E' respectively is called the _________ force.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Lorentz force: The fundamental force on an electric charge q moving with velocity v in a magnetic field B and electric field E is called the magnetic Lorentz force.
Lorentz force is the combination of electric force \(q\vec E\) and magnetic force \(q\left( {\vec v \times \vec B} \right)\).
Thus the Lorentz force is given by:
\(F = q\left[ {\vec E + \left( {\vec v \times \vec B} \right)} \right]\).
Where q is a charge, v = velocity of the particle, B = magnetic field and E is the electric field.
EXPLANATION:
- Ampere's law is used to find the magnetic field.
- Biot savart law is basic law to find the magnetic field due to a current element.
- The total force on a charge 'q' moving with velocity 'v' in the presence of magnetic and electric fields 'B' and 'E' respectively is called the Lorentz force. So option 3 is correct.
- Kirchhof's law is used to find the current and voltage in an electric circuit.
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