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Describe the motion of a charged particle in a cyclotron if the frequency of the radio frequency (rf) field were

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Two long wires carrying current I1 and I2 are arranged as shown in Fig. The one carrying current I1 is along is the x-axis. The other carrying current I2 is along a line parallel to the y-axis given by x = 0 and z = d. Find the force exerted at O2 because of the wire along the x-axis.

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A current carrying loop consists of 3 identical quarter circles of radius R, lying in the positive quadrants of the x-y, y-z and z-x planes with their centres at the origin, joined together. Find the direction and magnitude of B at the

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A charged particle of charge e and mass m is moving in an electric field E and magnetic field B. Construct dimensionless quantities and quantities of dimension [T

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An electron enters with a velocity v = v0i into a cubical region (faces parallel to coordinate planes) in which there are uniform electric and magnetic fields. The orbit of the electron is found to spiral down inside the cube in plane parallel to the x-y plane. Suggest a configuration of fields E and B that can lead to

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Do magnetic forces obey Newton’s third law. Verify for two current elements`dl_1 = dl hatj ` located at the origin and `dl_2 = dl hatj ` located at (0, R, 0). Both carry current

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A multirange voltmeter can be constructed by using a galvanometer circuit as shown in Fig. We want to construct a voltmeter that can measure 2V, 20V and 200V using a galvanometer of resistance 10Ω and that produces maximum deflection for current of 1 mA. Find R1, R2 and R3 that have to be

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A long straight wire carrying current of 25A rests on a table as shown in Fig. Another wire PQ of length 1m, mass 2.5 g carries the same current but in the opposite direction. The wire PQ is free to slide up and down. To what height will PQ rise?

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A 100 turn rectangular coil ABCD (in XY plane) is hung from one arm of a balance (Fig). A mass 500g is added to the other arm to balance the weight of the coil. A current 4.9 A passes through the coil and a constant magnetic field of 0.2 T acting inward (in xz plane) is switched on such that only arm CD of length 1 cm lies in the field. How much additional mass ‘m’ must be added to regain the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A rectangular conducting loop consists of two wires on two opposite sides of length l joined together by rods of length d. The wires are each of the same material but with cross-sections differing by a factor of 2. The thicker wire has a resistance R and the rods are of low resistance, which in turn are connected to a constant voltage source V0. The loop is placed in uniform a magnetic field B at 45° to its plane. Find τ, the torque exerted by the magnetic field on the loop about an axis through the centres of

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An electron and a positron are released from (0, 0, 0) and (0, 0, 1.5R ) respectively, in a uniform magnetic field B = `B_0 hati` , each with an equal momentum of magnitude p = e BR. Under what conditions on the direction of momentum will the orbits be

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A uniform conducting wire of length 12a and resistance R is wound up as a current carrying coil in the shape of (i) an equilateral triangle of side a; (ii) a square of sides a and, (iii) a regular hexagon of sides a. The coil is connected to a voltage source V0. Find the magnetic moment of the coils in each

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Consider a circular current-carrying loop of radius R in the x-y plane with centre at origin. Consider the line intergral ` ℑ (L) = |∫_(-L)^L B dl| ` taken along z-axis. Show that ℑ (L) monotonically increases with

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Consider a circular current-carrying loop of radius R in the x-y plane with centre at origin. Consider the line intergral ` ℑ (L) = |∫_(-L)^L B dl| ` taken along z-axis. Use an appropriate Amperian loop to show that ` ℑ ∞ = μ_0I` , where I

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Consider a circular current-carrying loop of radius R in the x-y plane with centre at origin. Consider the line intergral ` ℑ (L) = |∫_(-L)^L B dl| ` taken along z-axis. Verify directly the above

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Consider a circular current-carrying loop of radius R in the x-y plane with centre at origin. Consider the line intergral ` ℑ (L) = |∫_(-L)^L B dl| ` taken along z-axis. Suppose we replace the circular coil by a square coil of sides R carrying the same

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A multirange current meter can be constructed by using a galvanometer circuit as shown in Fig. We want a current meter that can measure 10mA, 100mA and 1A using a galvanometer of resistance 10Ω and that prduces maximum deflection for current of 1mA. Find S1, S2 and S3 that have to be

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Five long wires A, B, C, D and E, each carrying current I are arranged to form edges of a pentagonal prism as shown in Fig. Each carries current out of the plane of paper. What will be magnetic induction at a point on the axis O?

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Five long wires A, B, C, D and E, each carrying current I are arranged to form edges of a pentagonal prism as shown in Fig. Each carries current out of the plane of paper. What will be the field if current in one of the wires

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Five long wires A, B, C, D and E, each carrying current I are arranged to form edges of a pentagonal prism as shown in Fig. Each carries current out of the plane of paper. What if current in one of the wire (say) A is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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