AP EAMCET · PHYSICS · Magnetic Effects of Current
The force per unit length on a straight wire carrying current of 8 A making an angle of \(30^{\circ}\) with a uniform magnetic field of 0.15 T is
- A \(1.2 \mathrm{~N} \mathrm{~m}^{-1}\)
- B \(1.02 \mathrm{~N} \mathrm{~m}^{-1}\)
- C \(0.6 \mathrm{~N} \mathrm{~m}^{-1}\)
- D \(2.4 \mathrm{~N} \mathrm{~m}^{-1}\)
Answer & Solution
Correct Answer
(C) \(0.6 \mathrm{~N} \mathrm{~m}^{-1}\)
Step-by-step Solution
Detailed explanation
\(F/L = I B \sin \theta\) \(F/L = (8 \mathrm{~A})(0.15 \mathrm{~T})\sin(30^{\circ})\) \(F/L = (8)(0.15)(0.5) \mathrm{~N} \mathrm{~m}^{-1}\) \(F/L = 0.6 \mathrm{~N} \mathrm{~m}^{-1}\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- A ball of mass moving horizontally at strikes a vertical wall and rebounds with speed . The magnitude of the change in linear momentum is found to be . The magnitude of is,AP EAMCET 2022 Easy
- A car is moving along a circular path having coefficient of friction 0.5 and radius of curvature \(16.2 \mathrm{~m}\). Then the maximum velocity of the car that can travel without falling outwards is
(Acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) )AP EAMCET 2023 Easy - A simple pendulum is vibrating in an evacuated chamber. It will oscillate withAP EAMCET 2021 Easy
- A beam of light both reflects and refracts at the surface between air and glass. The index of refraction of the glass is 1.4. If the refracted and the reflected rays are perpendicular to each other, then the angle of incidence in the air isAP EAMCET 2022 Medium
- The load resistance and the base-emitter voltage of a transistor in CE configuration are \(5 \mathrm{k} \Omega\) and \(0.02 \mathrm{~V}\) respectively. If the collector current is \(2 \mathrm{~mA}\), then its voltage gain isAP EAMCET 2023 Easy
- Three charges \(4 q, Q\) and \(q\) are placed at positions \(0, \frac{l}{2}\) and \(l\) respectively along a straight line. If the resultant force on \(q\) is zero, then \(Q\) is equal toAP EAMCET 2020 Medium
More PYQs from AP EAMCET
- \(\sin ^2 76^{\circ}+\sin ^2 16^{\circ}-\sin 76^{\circ} \sin 16^{\circ}=\)AP EAMCET 2024 Easy
- If the sum of any two roots of the equation \(x^3+p x^2+q x+r=0\) is zero, thenAP EAMCET 2018 Medium
- If the curved surface area of right circular cylinder inscribed in a sphere of radius is maximum then height of the cylinder will beAP EAMCET 2020 Medium
- The rate equation for a first-order reaction is given by . A straight line with positive slope is obtained by plotting ( Initial concentration of the reactant, concentration of the reactant at time )AP EAMCET 2020 Medium
- Which of the following compounds are aromatic?
AP EAMCET 2021 Medium - If the lengths of the tangents drawn from a point \(P\) to the three circles \(x^2+y^2-4=0\), \(x^2+y^2-2 x+3 y=0\) and \(x^2+y^2+7 y-18=0\) are equal, then the coordinates of \(P\) areAP EAMCET 2018 Medium