Biot Savarts Law Question & Answers November 19, 2022 By WatElectronics This article lists 50 Biot Savart Law MCQs for engineering students. All the Biot Savart Law Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, or interviews, or professionals who would like to brush up on the fundamentals of Biot Savart Law. Electromagnetism is a concept in physics that deals with electromagnetic forces. Typically, it also deals with electric current and magnetic forces. Law relating magnetic field to electric currents is known as Biot-Savarts Law. It describes generated magnetic fields because of constant electric currents with the equation. The magnetic field generated is related to magnitude, length, direction & electric current proximity. Biot Savarts Law is a fundamental block to Magnetostatics just like Electrostatics have Coulomb’s Law. If magnetostatics is unapplied this law is replaced with the equations of Jefimenkos. Biot savarts law is about the magnetic field generated because of tiny currents carried by the segment. The segment taken here is the vector quantity and called as Current element. This law can be applied to the smaller conductors that carry current and provides symmetrical distribution of current. Magnetic responses at molecular or atomic levels are calculated using this law for example Magnetic susceptibilities or Chemical shieldings. Velocity induced due to Vortex lines in aerodynamics also uses Biot Savarts law for calculation. 1). Biot Savarts' law in magnetism is analogous to ___________ in electricity? Faradays Law Coulomb’s Law Kirchoff’s Law Amperes Law None Hint 2). Biot Savarts Law cannot calculate ___________? Electric Field Intensity Magnetic Field Intensity Flux Density Permeability None Hint 3). Which is termed as vector-quantity in ‘Biot Savarts Law’? Magnetic Element Current Element Temperature Element Voltage Element None Hint 4). Magnetic fields carried by the conductors at concerning points are calculated using _____________? Faradays Law Coulomb’s Law Kirchoff’s Law Biot Savarts Law None Hint 5). What does the Biot Savarts Law state? Magnetic Field is in Direct Proportion with Current Element Magnetic Field is in Inverse Proportion with Current Element Electric Field is in Direct Proportion with the Current Element Electric Field is in Inverse Proportion to the Current Element None Hint 6). What is the magnetic field’s equation as per Biot Savarts Law? Idl/ sinθ (µo/4π) (Idl sinθ/ r2 ) (µo/4π) (µo/4π) (Idl sinθ) None Hint 7). Which equation represents Biot-Savarts Law in vector form? Idl/ sinθ (µo/4π) (Idl sinθ/ r2 ) (µo/4π) i((dl*r)/r3) (µo/4π) (Idl sinθ) None Hint 8). Magnetic field in Biot-Savarts law is in proportion to _______________? Elements Length Electric Field Conductors Current a & c None Hint 9). Magnetic field in Biot-Savarts law increase with __________? Increased Current Decreased Current Increased Distance Doesn’t Change None Hint 10). Magnetic field in Biot-Savarts law decrease due to __________? Increased Current Decreased Current Increased Distance Doesn’t Change None Hint 11). What is the relation between the magnetic field and the infinite lengths of wire at a certain distance 'r' from the conductor? B α r B α 1/r B α r2 B α 1/r2 None Hint 12). What is calculated using Biot Savarts Law? Magnetic Field Intensity Permeability Magnetic Flux Density All Mentioned Above None Hint 13). Direction of magnetic fields follow ________________ for straight wires? Right-Hand Rule Left-Hand Rule Faradays Law Lenz’s Law None Hint 14). Magnetic fields direction is ________________ to line of element? Parallel Perpendicular Equivalent None None Hint 15). Biot Savarts Law is also referred to as ___________________? Faradays Law Coulomb’s Law Kirchoff’s Law Laplace Law None Hint 16). Magnetic field produced is in direct proportion to _______________? Current Elements Length Sine Angle θ All Mentioned Above None Hint 17). A loop of wire forms a full circle with current I and radius R. What can be the magnitude of the magnetic field at its center? Idl/ sinθ (µo/4π) (Idl sinθ/ r2 ) (µo/4π) i((dl*r)/r3) µoI/2R None Hint 18). Radius of a circularly placed coil is 4 * 10-2 meters with 60 turns and carries a current of about 0.5 A. Determine the circular coil's magnetic field at its center? 1.2 T 1.6 * 10-2 T 3*10-4 T 4.7* 10-4 T None Hint 19). A rod of copper carries DC to produce magnetic fields at ____________? Inside Rod Outside Rod a & b None None Hint 20). Magnetic field outside the conductor is ______________? Zero Finite Infinite Maximum None Hint Biot Savarts Law MCQ for Interviews 21). A circularly placed conductor with a radius of 2 m and the current flowed is 6 A. Determine the intensity of the magnetic field at the circular conductor's center? 2 T 6 * 10-7 T 8*10-7 T 10* 10-4 T None Hint 22). Magnetic field produced because of current carrying element depends on _______________? Current Flow Distance Length All Mentioned Above None Hint 23). If the radius of current carried coils is doubled by maintaining the same current. How does it affect the magnetic fields produced at the center? Doubled Halved Tripled Doesn’t Change None Hint 24). Which equation determines created magnetic fields by wires carrying current? Faradays Law Coulomb’s Law Kirchoff’s Law Biot Savarts Law None Hint 25). Magnetic field produced by r distance from the wires of long length with the current 'I' is 0.6 T. What is the Magnetic field produced for 2r distance? 0 T 0.1 T 0.2 T 0.3 T None Hint 26). If the current flowing through the coil, is I and its radius is R then the field generated at the center of the circular coil is ____________? Directly Proportional to I Directly Proportional to I2 Inversely Proportional to I Inversely Proportional to I2 None Hint 27). A wire with the length I carry current i.e., steady. Firstly, it has bent and forms one circular turn. Then a similar wire with length is being same is bent and forms two turns of radius being small. Find the field produced at the center due to similar currents. One-third of the Initial Value Four Times of Initial Value Nine Times of Initial Value Doesn’t Change None Hint 28). Magnetic fields direction along dl is ___________? Zero Finite Infinite Maximum None Hint 29). What is the constant of proportionality in Biot Savarts Equation? Permittivity of Free Space Permeability of Free Space Sigma Epsilon None Hint 30). _______________ are perpendicular to the magnetic field’s direction? r dl Sinθ a & b None Hint 31). What should be done along the conductors' length to calculate magnetic fields? Integration Differentiation Multiplication Division None Hint 32). As per Biot Savarts Law what are the various factors related to the Magnetic field? Electric Currents Direction Electric Currents Proximity Electric Currents Magnitude All Mentioned Above None Hint 33). _______________ maintains consistency with Gauss's and Ampere's law of circuits? Faradays Law Coulomb’s Law Kirchoff’s Law Biot Savarts Law None Hint 34). What is used in calculating velocity in aerodynamics? Faradays Law Coulomb’s Law Kirchoff’s Law Biot Savarts Law None Hint 35). Magnetic fields direction aroused from Vectors product natures is dependent upon ____________? Electric Voltage Electric Current Temperature Sine Angle None Hint 36). Biot Savarts law equation is derived based on _________________? Magnetic Properties of Medium System of Units Used Electric Properties of Medium a & b None Hint 37). Asymmetrical wires' magnetic field is determined using ______________? Faradays Law Coulomb’s Law Kirchoff’s Law Biot Savarts Law None Hint 38). _____________ obeys the inverse law of the square? Faradays Law Coulomb’s Law Kirchoff’s Law Biot Savarts Law None Hint 39). Chemical shieldings make use of ____________? Faradays Law Coulomb’s Law Kirchoff’s Law Biot Savarts Law None Hint 40). Who invented Biot Savarts Law? Jean-Baptiste Biot Felix Savart Napolean Bonaparte a & b None Hint Biot Savarts Law MCQs for Students 41). Which is the fundamental block of Magnetostatics? Faradays Law Coulomb’s Law Kirchoff’s Law Biot Savarts Law None Hint 42). A loop i.e., circular with a radius of o.o14m carries a current of about 2 Amps. Find the field at its center? 1.5 T 3.1* 10-5 T 8.9* 10-5 T 8*10-5 T None Hint 43). Biot Savarts Law is applicable for ________________? Shorter Ranges Medium Ranges Longer Ranges All Mentioned Above None Hint 44). Force amid two Parallel & long current carrying conductors is determined by _____________? Faradays Law Coulomb’s Law Kirchoff’s Law Biot Savarts Law None Hint 45). Magnetic responses at molecular or atomic levels are calculated using ____________? Faradays Law Coulomb’s Law Kirchoff’s Law Biot Savarts Law None Hint 46). Biot-Savarts Law requires _________________? Steady Currents Varying Currents Steady Voltages Steady Temperature None Hint 47). Magnetic field at the center of current carrying arcs is calculated using ___________? Faradays Law Coulomb’s Law Kirchoff’s Law Biot Savarts Law None Hint 48). Which law is applied to calculate the magnetic field for the wire i.e., asymmetrical? Faradays Law Coulomb’s Law Kirchoff’s Law Biot Savarts Law None Hint 49). Biot Savarts Law is applicable for _____________? Large Conductors Insulators Small Conductors Semi-conductors None Hint 50). What is the magnetic field at the conductor's center if the current subjected is 10 Amperes and the radius is infinite? 0 Infinite 10 Tesla 20 Tesla None Hint For More MCQs Ohms Law Question & Answers Please fill in the comment box below. Time's up
