A loop of wire carrying a current of 2.0 A is in the shape of a right triangle w

Question

A loop of wire carrying a current of 2.0 A is in the shape of a right triangle with two equal sides, each 15 cm long. A 0.7 T uniform B-field is in the plane of the tnanglc and is perpendicular to the hypotenuse. The resultant magnetic force on the two sides has magnitude: 0 0.21N 0.30N 0.41 N 0.51 N Suitable units for mu_0 are: tesla newton/ampere^2 weber/meter kilogram-ampere/meter tesla meter/ampere The diagrams show three circuits consisting of concentric circular arcs (other half or quarter circles of radii r. 2r. and 3r) and radial lengths. The circuits cany the same current. Rank them according to the magnitudes of the magnetic fields they produce at C. least to greatest. 1, 2, 3 3,2,1, 1,3,2 2,3,1 2,1,3 A constant current is sent through a helical coil (like a solenoid). The coil: tends to get shorter tends to get longer tends to rotate about its axis produces 0 magnetic field at its center none of the above The circuit shown is in a uniform magnetic field that is into the page and is increasing in magnitude at the rate 150 T/s. The current in the circuit (in amperes) is: 0.18 Amps 0.22 Amps 0.40 Amps 0.62 Amps None of the above The diagram shows three arrangements of circular loops, centered on vertical axes and carrying identical currents in the directions indicated. Rank the arrangements from least to greatest according to the magnitudes of the magnetic fields at the midpoints between the loops on the central axes. 1, 2, 3 2,1,3 2,3,1 3,2,1 3,1, 2

Explanation / Answer

17.)

F = BiL cos(theta)

Total force on both side

F = 2*0.7 *2*0.15*Cos(45)

F = 0.30 N

option C is correct

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